thesis and dissertations are sources for review of related

What Is A Literature Review?

A plain-language explainer (with examples).

By:  Derek Jansen (MBA) & Kerryn Warren (PhD) | June 2020 (Updated May 2023)

If you’re faced with writing a dissertation or thesis, chances are you’ve encountered the term “literature review” . If you’re on this page, you’re probably not 100% what the literature review is all about. The good news is that you’ve come to the right place.

Literature Review 101

• What (exactly) is a literature review
• What’s the purpose of the literature review chapter
• How to find high-quality resources
• How to structure your literature review chapter
• Example of an actual literature review

What is a literature review?

The word “literature review” can refer to two related things that are part of the broader literature review process. The first is the task of  reviewing the literature  – i.e. sourcing and reading through the existing research relating to your research topic. The second is the  actual chapter  that you write up in your dissertation, thesis or research project. Let’s look at each of them:

Reviewing the literature

The first step of any literature review is to hunt down and  read through the existing research  that’s relevant to your research topic. To do this, you’ll use a combination of tools (we’ll discuss some of these later) to find journal articles, books, ebooks, research reports, dissertations, theses and any other credible sources of information that relate to your topic. You’ll then  summarise and catalogue these  for easy reference when you write up your literature review chapter. 

The literature review chapter

The second step of the literature review is to write the actual literature review chapter (this is usually the second chapter in a typical dissertation or thesis structure ). At the simplest level, the literature review chapter is an  overview of the key literature  that’s relevant to your research topic. This chapter should provide a smooth-flowing discussion of what research has already been done, what is known, what is unknown and what is contested in relation to your research topic. So, you can think of it as an  integrated review of the state of knowledge  around your research topic. 

What’s the purpose of a literature review?

The literature review chapter has a few important functions within your dissertation, thesis or research project. Let’s take a look at these:

Purpose #1 – Demonstrate your topic knowledge

The first function of the literature review chapter is, quite simply, to show the reader (or marker) that you  know what you’re talking about . In other words, a good literature review chapter demonstrates that you’ve read the relevant existing research and understand what’s going on – who’s said what, what’s agreed upon, disagreed upon and so on. This needs to be  more than just a summary  of who said what – it needs to integrate the existing research to  show how it all fits together  and what’s missing (which leads us to purpose #2, next). 

Purpose #2 – Reveal the research gap that you’ll fill

The second function of the literature review chapter is to  show what’s currently missing  from the existing research, to lay the foundation for your own research topic. In other words, your literature review chapter needs to show that there are currently “missing pieces” in terms of the bigger puzzle, and that  your study will fill one of those research gaps . By doing this, you are showing that your research topic is original and will help contribute to the body of knowledge. In other words, the literature review helps justify your research topic.  

Purpose #3 – Lay the foundation for your conceptual framework

The third function of the literature review is to form the  basis for a conceptual framework . Not every research topic will necessarily have a conceptual framework, but if your topic does require one, it needs to be rooted in your literature review. 

For example, let’s say your research aims to identify the drivers of a certain outcome – the factors which contribute to burnout in office workers. In this case, you’d likely develop a conceptual framework which details the potential factors (e.g. long hours, excessive stress, etc), as well as the outcome (burnout). Those factors would need to emerge from the literature review chapter – they can’t just come from your gut! 

So, in this case, the literature review chapter would uncover each of the potential factors (based on previous studies about burnout), which would then be modelled into a framework. 

Purpose #4 – To inform your methodology

The fourth function of the literature review is to  inform the choice of methodology  for your own research. As we’ve  discussed on the Grad Coach blog , your choice of methodology will be heavily influenced by your research aims, objectives and questions . Given that you’ll be reviewing studies covering a topic close to yours, it makes sense that you could learn a lot from their (well-considered) methodologies.

So, when you’re reviewing the literature, you’ll need to  pay close attention to the research design , methodology and methods used in similar studies, and use these to inform your methodology. Quite often, you’ll be able to  “borrow” from previous studies . This is especially true for quantitative studies , as you can use previously tried and tested measures and scales. 

How do I find articles for my literature review?

Finding quality journal articles is essential to crafting a rock-solid literature review. As you probably already know, not all research is created equally, and so you need to make sure that your literature review is  built on credible research . 

We could write an entire post on how to find quality literature (actually, we have ), but a good starting point is Google Scholar . Google Scholar is essentially the academic equivalent of Google, using Google’s powerful search capabilities to find relevant journal articles and reports. It certainly doesn’t cover every possible resource, but it’s a very useful way to get started on your literature review journey, as it will very quickly give you a good indication of what the  most popular pieces of research  are in your field.

One downside of Google Scholar is that it’s merely a search engine – that is, it lists the articles, but oftentimes  it doesn’t host the articles . So you’ll often hit a paywall when clicking through to journal websites. 

Thankfully, your university should provide you with access to their library, so you can find the article titles using Google Scholar and then search for them by name in your university’s online library. Your university may also provide you with access to  ResearchGate , which is another great source for existing research. 

Remember, the correct search keywords will be super important to get the right information from the start. So, pay close attention to the keywords used in the journal articles you read and use those keywords to search for more articles. If you can’t find a spoon in the kitchen, you haven’t looked in the right drawer. 

Need a helping hand?

How should I structure my literature review?

Unfortunately, there’s no generic universal answer for this one. The structure of your literature review will depend largely on your topic area and your research aims and objectives.

You could potentially structure your literature review chapter according to theme, group, variables , chronologically or per concepts in your field of research. We explain the main approaches to structuring your literature review here . You can also download a copy of our free literature review template to help you establish an initial structure.

In general, it’s also a good idea to start wide (i.e. the big-picture-level) and then narrow down, ending your literature review close to your research questions . However, there’s no universal one “right way” to structure your literature review. The most important thing is not to discuss your sources one after the other like a list – as we touched on earlier, your literature review needs to synthesise the research , not summarise it .

Ultimately, you need to craft your literature review so that it conveys the most important information effectively – it needs to tell a logical story in a digestible way. It’s no use starting off with highly technical terms and then only explaining what these terms mean later. Always assume your reader is not a subject matter expert and hold their hand through a journe y of the literature while keeping the functions of the literature review chapter (which we discussed earlier) front of mind.

Example of a literature review

In the video below, we walk you through a high-quality literature review from a dissertation that earned full distinction. This will give you a clearer view of what a strong literature review looks like in practice and hopefully provide some inspiration for your own. 

Wrapping Up

In this post, we’ve (hopefully) answered the question, “ what is a literature review? “. We’ve also considered the purpose and functions of the literature review, as well as how to find literature and how to structure the literature review chapter. If you’re keen to learn more, check out the literature review section of the Grad Coach blog , as well as our detailed video post covering how to write a literature review . 

Psst… there’s more!

This post is an extract from our bestselling short course, Literature Review Bootcamp . If you want to work smart, you don't want to miss this .

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16 Comments

Thanks for this review. It narrates what’s not been taught as tutors are always in a early to finish their classes.

Thanks for the kind words, Becky. Good luck with your literature review 🙂

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Timothy T. Chol [email protected]

Thank you very much for the guiding in literature review I learn and benefited a lot this make my journey smooth I’ll recommend this site to my friends

This was so useful. Thank you so much.

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The review is really helpful to me especially during this period of covid-19 pandemic when most universities in my country only offer online classes. Great stuff

Great Brief Explanation, thanks

So helpful to me as a student

GradCoach is a fantastic site with brilliant and modern minds behind it.. I spent weeks decoding the substantial academic Jargon and grounding my initial steps on the research process, which could be shortened to a couple of days through the Gradcoach. Thanks again!

This is an amazing talk. I paved way for myself as a researcher. Thank you GradCoach!

Well-presented overview of the literature!

This was brilliant. So clear. Thank you

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Reference management. Clean and simple.

How to write a literature review in 6 steps

What is a literature review?

How to write a literature review, 1. determine the purpose of your literature review, 2. do an extensive search, 3. evaluate and select literature, 4. analyze the literature, 5. plan the structure of your literature review, 6. write your literature review, other resources to help you write a successful literature review, frequently asked questions about writing a literature review, related articles.

A literature review is an assessment of the sources in a chosen topic of research.

A good literature review does not just summarize sources. It analyzes the state of the field on a given topic and creates a scholarly foundation for you to make your own intervention. It demonstrates to your readers how your research fits within a larger field of study.

In a thesis, a literature review is part of the introduction, but it can also be a separate section. In research papers, a literature review may have its own section or it may be integrated into the introduction, depending on the field.

➡️ Our guide on what is a literature review covers additional basics about literature reviews.

• Identify the main purpose of the literature review.
• Do extensive research.
• Evaluate and select relevant sources.
• Analyze the sources.
• Plan a structure.
• Write the review.

In this section, we review each step of the process of creating a literature review.

In the first step, make sure you know specifically what the assignment is and what form your literature review should take. Read your assignment carefully and seek clarification from your professor or instructor if needed. You should be able to answer the following questions:

• How many sources do I need to include?
• What types of sources should I review?
• Should I evaluate the sources?
• Should I summarize, synthesize or critique sources?
• Do I need to provide any definitions or background information?

In addition to that, be aware that the narrower your topic, the easier it will be to limit the number of sources you need to read in order to get a good overview of the topic.

Now you need to find out what has been written on the topic and search for literature related to your research topic. Make sure to select appropriate source material, which means using academic or scholarly sources , including books, reports, journal articles , government documents and web resources.

➡️ If you’re unsure about how to tell if a source is scholarly, take a look at our guide on how to identify a scholarly source .

Come up with a list of relevant keywords and then start your search with your institution's library catalog, and extend it to other useful databases and academic search engines like:

• Google Scholar
• Science.gov

➡️ Our guide on how to collect data for your thesis might be helpful at this stage of your research as well as the top list of academic search engines .

Once you find a useful article, check out the reference list. It should provide you with even more relevant sources. Also, keep a note of the:

• authors' names
• page numbers

Keeping track of the bibliographic information for each source will save you time when you’re ready to create citations. You could also use a reference manager like Paperpile to automatically save, manage, and cite your references.

Read the literature. You will most likely not be able to read absolutely everything that is out there on the topic. Therefore, read the abstract first to determine whether the rest of the source is worth your time. If the source is relevant for your topic:

• Read it critically.
• Look for the main arguments.
• Take notes as you read.
• Organize your notes using a table, mind map, or other technique.

Now you are ready to analyze the literature you have gathered. While your are working on your analysis, you should ask the following questions:

• What are the key terms, concepts and problems addressed by the author?
• How is this source relevant for my specific topic?
• How is the article structured? What are the major trends and findings?
• What are the conclusions of the study?
• How are the results presented? Is the source credible?
• When comparing different sources, how do they relate to each other? What are the similarities, what are the differences?
• Does the study help me understand the topic better?
• Are there any gaps in the research that need to be filled? How can I further my research as a result of the review?

Tip: Decide on the structure of your literature review before you start writing.

There are various ways to organize your literature review:

• Chronological method : Writing in the chronological method means you are presenting the materials according to when they were published. Follow this approach only if a clear path of research can be identified.
• Thematic review : A thematic review of literature is organized around a topic or issue, rather than the progression of time.
• Publication-based : You can order your sources by publication, if the way you present the order of your sources demonstrates a more important trend. This is the case when a progression revealed from study to study and the practices of researchers have changed and adapted due to the new revelations.
• Methodological approach : A methodological approach focuses on the methods used by the researcher. If you have used sources from different disciplines that use a variety of research methods, you might want to compare the results in light of the different methods and discuss how the topic has been approached from different sides.

Regardless of the structure you chose, a review should always include the following three sections:

• An introduction, which should give the reader an outline of why you are writing the review and explain the relevance of the topic.
• A body, which divides your literature review into different sections. Write in well-structured paragraphs, use transitions and topic sentences and critically analyze each source for how it contributes to the themes you are researching.
• A conclusion , which summarizes the key findings, the main agreements and disagreements in the literature, your overall perspective, and any gaps or areas for further research.

➡️ If your literature review is part of a longer paper, visit our guide on what is a research paper for additional tips.

➡️ UNC writing center: Literature reviews

➡️ How to write a literature review in 3 steps

➡️ How to write a literature review in 30 minutes or less

The goal of a literature review is to asses the state of the field on a given topic in preparation for making an intervention.

A literature review should have its own independent section. You should indicate clearly in the table of contents where it can be found, and address this section as “Literature Review.”

There is no set amount of words for a literature review; the length depends on the research. If you are working with a large amount of sources, then it will be long. If your paper does not depend entirely on references, then it will be short.

Most research papers include a literature review. By assessing the available sources in your field of research, you will be able to make a more confident argument about the topic.

Literature reviews are most commonly found in theses and dissertations. However, you find them in research papers as well.

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Approaching literature review for academic purposes: The Literature Review Checklist

Debora f.b. leite.

I Departamento de Ginecologia e Obstetricia, Faculdade de Ciencias Medicas, Universidade Estadual de Campinas, Campinas, SP, BR

II Universidade Federal de Pernambuco, Pernambuco, PE, BR

III Hospital das Clinicas, Universidade Federal de Pernambuco, Pernambuco, PE, BR

Maria Auxiliadora Soares Padilha

Jose g. cecatti.

A sophisticated literature review (LR) can result in a robust dissertation/thesis by scrutinizing the main problem examined by the academic study; anticipating research hypotheses, methods and results; and maintaining the interest of the audience in how the dissertation/thesis will provide solutions for the current gaps in a particular field. Unfortunately, little guidance is available on elaborating LRs, and writing an LR chapter is not a linear process. An LR translates students’ abilities in information literacy, the language domain, and critical writing. Students in postgraduate programs should be systematically trained in these skills. Therefore, this paper discusses the purposes of LRs in dissertations and theses. Second, the paper considers five steps for developing a review: defining the main topic, searching the literature, analyzing the results, writing the review and reflecting on the writing. Ultimately, this study proposes a twelve-item LR checklist. By clearly stating the desired achievements, this checklist allows Masters and Ph.D. students to continuously assess their own progress in elaborating an LR. Institutions aiming to strengthen students’ necessary skills in critical academic writing should also use this tool.

INTRODUCTION

Writing the literature review (LR) is often viewed as a difficult task that can be a point of writer’s block and procrastination ( 1 ) in postgraduate life. Disagreements on the definitions or classifications of LRs ( 2 ) may confuse students about their purpose and scope, as well as how to perform an LR. Interestingly, at many universities, the LR is still an important element in any academic work, despite the more recent trend of producing scientific articles rather than classical theses.

The LR is not an isolated section of the thesis/dissertation or a copy of the background section of a research proposal. It identifies the state-of-the-art knowledge in a particular field, clarifies information that is already known, elucidates implications of the problem being analyzed, links theory and practice ( 3 - 5 ), highlights gaps in the current literature, and places the dissertation/thesis within the research agenda of that field. Additionally, by writing the LR, postgraduate students will comprehend the structure of the subject and elaborate on their cognitive connections ( 3 ) while analyzing and synthesizing data with increasing maturity.

At the same time, the LR transforms the student and hints at the contents of other chapters for the reader. First, the LR explains the research question; second, it supports the hypothesis, objectives, and methods of the research project; and finally, it facilitates a description of the student’s interpretation of the results and his/her conclusions. For scholars, the LR is an introductory chapter ( 6 ). If it is well written, it demonstrates the student’s understanding of and maturity in a particular topic. A sound and sophisticated LR can indicate a robust dissertation/thesis.

A consensus on the best method to elaborate a dissertation/thesis has not been achieved. The LR can be a distinct chapter or included in different sections; it can be part of the introduction chapter, part of each research topic, or part of each published paper ( 7 ). However, scholars view the LR as an integral part of the main body of an academic work because it is intrinsically connected to other sections ( Figure 1 ) and is frequently present. The structure of the LR depends on the conventions of a particular discipline, the rules of the department, and the student’s and supervisor’s areas of expertise, needs and interests.

Interestingly, many postgraduate students choose to submit their LR to peer-reviewed journals. As LRs are critical evaluations of current knowledge, they are indeed publishable material, even in the form of narrative or systematic reviews. However, systematic reviews have specific patterns 1 ( 8 ) that may not entirely fit with the questions posed in the dissertation/thesis. Additionally, the scope of a systematic review may be too narrow, and the strict criteria for study inclusion may omit important information from the dissertation/thesis. Therefore, this essay discusses the definition of an LR is and methods to develop an LR in the context of an academic dissertation/thesis. Finally, we suggest a checklist to evaluate an LR.

WHAT IS A LITERATURE REVIEW IN A THESIS?

Conducting research and writing a dissertation/thesis translates rational thinking and enthusiasm ( 9 ). While a strong body of literature that instructs students on research methodology, data analysis and writing scientific papers exists, little guidance on performing LRs is available. The LR is a unique opportunity to assess and contrast various arguments and theories, not just summarize them. The research results should not be discussed within the LR, but the postgraduate student tends to write a comprehensive LR while reflecting on his or her own findings ( 10 ).

Many people believe that writing an LR is a lonely and linear process. Supervisors or the institutions assume that the Ph.D. student has mastered the relevant techniques and vocabulary associated with his/her subject and conducts a self-reflection about previously published findings. Indeed, while elaborating the LR, the student should aggregate diverse skills, which mainly rely on his/her own commitment to mastering them. Thus, less supervision should be required ( 11 ). However, the parameters described above might not currently be the case for many students ( 11 , 12 ), and the lack of formal and systematic training on writing LRs is an important concern ( 11 ).

An institutional environment devoted to active learning will provide students the opportunity to continuously reflect on LRs, which will form a dialogue between the postgraduate student and the current literature in a particular field ( 13 ). Postgraduate students will be interpreting studies by other researchers, and, according to Hart (1998) ( 3 ), the outcomes of the LR in a dissertation/thesis include the following:

• To identify what research has been performed and what topics require further investigation in a particular field of knowledge;
• To determine the context of the problem;
• To recognize the main methodologies and techniques that have been used in the past;
• To place the current research project within the historical, methodological and theoretical context of a particular field;
• To identify significant aspects of the topic;
• To elucidate the implications of the topic;
• To offer an alternative perspective;
• To discern how the studied subject is structured;
• To improve the student’s subject vocabulary in a particular field; and
• To characterize the links between theory and practice.

A sound LR translates the postgraduate student’s expertise in academic and scientific writing: it expresses his/her level of comfort with synthesizing ideas ( 11 ). The LR reveals how well the postgraduate student has proceeded in three domains: an effective literature search, the language domain, and critical writing.

Effective literature search

All students should be trained in gathering appropriate data for specific purposes, and information literacy skills are a cornerstone. These skills are defined as “an individual’s ability to know when they need information, to identify information that can help them address the issue or problem at hand, and to locate, evaluate, and use that information effectively” ( 14 ). Librarian support is of vital importance in coaching the appropriate use of Boolean logic (AND, OR, NOT) and other tools for highly efficient literature searches (e.g., quotation marks and truncation), as is the appropriate management of electronic databases.

Language domain

Academic writing must be concise and precise: unnecessary words distract the reader from the essential content ( 15 ). In this context, reading about issues distant from the research topic ( 16 ) may increase students’ general vocabulary and familiarity with grammar. Ultimately, reading diverse materials facilitates and encourages the writing process itself.

Critical writing

Critical judgment includes critical reading, thinking and writing. It supposes a student’s analytical reflection about what he/she has read. The student should delineate the basic elements of the topic, characterize the most relevant claims, identify relationships, and finally contrast those relationships ( 17 ). Each scientific document highlights the perspective of the author, and students will become more confident in judging the supporting evidence and underlying premises of a study and constructing their own counterargument as they read more articles. A paucity of integration or contradictory perspectives indicates lower levels of cognitive complexity ( 12 ).

Thus, while elaborating an LR, the postgraduate student should achieve the highest category of Bloom’s cognitive skills: evaluation ( 12 ). The writer should not only summarize data and understand each topic but also be able to make judgments based on objective criteria, compare resources and findings, identify discrepancies due to methodology, and construct his/her own argument ( 12 ). As a result, the student will be sufficiently confident to show his/her own voice .

Writing a consistent LR is an intense and complex activity that reveals the training and long-lasting academic skills of a writer. It is not a lonely or linear process. However, students are unlikely to be prepared to write an LR if they have not mastered the aforementioned domains ( 10 ). An institutional environment that supports student learning is crucial.

Different institutions employ distinct methods to promote students’ learning processes. First, many universities propose modules to develop behind the scenes activities that enhance self-reflection about general skills (e.g., the skills we have mastered and the skills we need to develop further), behaviors that should be incorporated (e.g., self-criticism about one’s own thoughts), and each student’s role in the advancement of his/her field. Lectures or workshops about LRs themselves are useful because they describe the purposes of the LR and how it fits into the whole picture of a student’s work. These activities may explain what type of discussion an LR must involve, the importance of defining the correct scope, the reasons to include a particular resource, and the main role of critical reading.

Some pedagogic services that promote a continuous improvement in study and academic skills are equally important. Examples include workshops about time management, the accomplishment of personal objectives, active learning, and foreign languages for nonnative speakers. Additionally, opportunities to converse with other students promotes an awareness of others’ experiences and difficulties. Ultimately, the supervisor’s role in providing feedback and setting deadlines is crucial in developing students’ abilities and in strengthening students’ writing quality ( 12 ).

HOW SHOULD A LITERATURE REVIEW BE DEVELOPED?

A consensus on the appropriate method for elaborating an LR is not available, but four main steps are generally accepted: defining the main topic, searching the literature, analyzing the results, and writing ( 6 ). We suggest a fifth step: reflecting on the information that has been written in previous publications ( Figure 2 ).

First step: Defining the main topic

Planning an LR is directly linked to the research main question of the thesis and occurs in parallel to students’ training in the three domains discussed above. The planning stage helps organize ideas, delimit the scope of the LR ( 11 ), and avoid the wasting of time in the process. Planning includes the following steps:

• Reflecting on the scope of the LR: postgraduate students will have assumptions about what material must be addressed and what information is not essential to an LR ( 13 , 18 ). Cooper’s Taxonomy of Literature Reviews 2 systematizes the writing process through six characteristics and nonmutually exclusive categories. The focus refers to the reviewer’s most important points of interest, while the goals concern what students want to achieve with the LR. The perspective assumes answers to the student’s own view of the LR and how he/she presents a particular issue. The coverage defines how comprehensive the student is in presenting the literature, and the organization determines the sequence of arguments. The audience is defined as the group for whom the LR is written.
• Designating sections and subsections: Headings and subheadings should be specific, explanatory and have a coherent sequence throughout the text ( 4 ). They simulate an inverted pyramid, with an increasing level of reflection and depth of argument.
• Identifying keywords: The relevant keywords for each LR section should be listed to guide the literature search. This list should mirror what Hart (1998) ( 3 ) advocates as subject vocabulary . The keywords will also be useful when the student is writing the LR since they guide the reader through the text.
• Delineating the time interval and language of documents to be retrieved in the second step. The most recently published documents should be considered, but relevant texts published before a predefined cutoff year can be included if they are classic documents in that field. Extra care should be employed when translating documents.

Second step: Searching the literature

The ability to gather adequate information from the literature must be addressed in postgraduate programs. Librarian support is important, particularly for accessing difficult texts. This step comprises the following components:

• Searching the literature itself: This process consists of defining which databases (electronic or dissertation/thesis repositories), official documents, and books will be searched and then actively conducting the search. Information literacy skills have a central role in this stage. While searching electronic databases, controlled vocabulary (e.g., Medical Subject Headings, or MeSH, for the PubMed database) or specific standardized syntax rules may need to be applied.

In addition, two other approaches are suggested. First, a review of the reference list of each document might be useful for identifying relevant publications to be included and important opinions to be assessed. This step is also relevant for referencing the original studies and leading authors in that field. Moreover, students can directly contact the experts on a particular topic to consult with them regarding their experience or use them as a source of additional unpublished documents.

Before submitting a dissertation/thesis, the electronic search strategy should be repeated. This process will ensure that the most recently published papers will be considered in the LR.

• Selecting documents for inclusion: Generally, the most recent literature will be included in the form of published peer-reviewed papers. Assess books and unpublished material, such as conference abstracts, academic texts and government reports, are also important to assess since the gray literature also offers valuable information. However, since these materials are not peer-reviewed, we recommend that they are carefully added to the LR.

This task is an important exercise in time management. First, students should read the title and abstract to understand whether that document suits their purposes, addresses the research question, and helps develop the topic of interest. Then, they should scan the full text, determine how it is structured, group it with similar documents, and verify whether other arguments might be considered ( 5 ).

Third step: Analyzing the results

Critical reading and thinking skills are important in this step. This step consists of the following components:

• Reading documents: The student may read various texts in depth according to LR sections and subsections ( defining the main topic ), which is not a passive activity ( 1 ). Some questions should be asked to practice critical analysis skills, as listed below. Is the research question evident and articulated with previous knowledge? What are the authors’ research goals and theoretical orientations, and how do they interact? Are the authors’ claims related to other scholars’ research? Do the authors consider different perspectives? Was the research project designed and conducted properly? Are the results and discussion plausible, and are they consistent with the research objectives and methodology? What are the strengths and limitations of this work? How do the authors support their findings? How does this work contribute to the current research topic? ( 1 , 19 )
• Taking notes: Students who systematically take notes on each document are more readily able to establish similarities or differences with other documents and to highlight personal observations. This approach reinforces the student’s ideas about the next step and helps develop his/her own academic voice ( 1 , 13 ). Voice recognition software ( 16 ), mind maps ( 5 ), flowcharts, tables, spreadsheets, personal comments on the referenced texts, and note-taking apps are all available tools for managing these observations, and the student him/herself should use the tool that best improves his/her learning. Additionally, when a student is considering submitting an LR to a peer-reviewed journal, notes should be taken on the activities performed in all five steps to ensure that they are able to be replicated.

Fourth step: Writing

The recognition of when a student is able and ready to write after a sufficient period of reading and thinking is likely a difficult task. Some students can produce a review in a single long work session. However, as discussed above, writing is not a linear process, and students do not need to write LRs according to a specific sequence of sections. Writing an LR is a time-consuming task, and some scholars believe that a period of at least six months is sufficient ( 6 ). An LR, and academic writing in general, expresses the writer’s proper thoughts, conclusions about others’ work ( 6 , 10 , 13 , 16 ), and decisions about methods to progress in the chosen field of knowledge. Thus, each student is expected to present a different learning and writing trajectory.

In this step, writing methods should be considered; then, editing, citing and correct referencing should complete this stage, at least temporarily. Freewriting techniques may be a good starting point for brainstorming ideas and improving the understanding of the information that has been read ( 1 ). Students should consider the following parameters when creating an agenda for writing the LR: two-hour writing blocks (at minimum), with prespecified tasks that are possible to complete in one section; short (minutes) and long breaks (days or weeks) to allow sufficient time for mental rest and reflection; and short- and long-term goals to motivate the writing itself ( 20 ). With increasing experience, this scheme can vary widely, and it is not a straightforward rule. Importantly, each discipline has a different way of writing ( 1 ), and each department has its own preferred styles for citations and references.

Fifth step: Reflecting on the writing

In this step, the postgraduate student should ask him/herself the same questions as in the analyzing the results step, which can take more time than anticipated. Ambiguities, repeated ideas, and a lack of coherence may not be noted when the student is immersed in the writing task for long periods. The whole effort will likely be a work in progress, and continuous refinements in the written material will occur once the writing process has begun.

LITERATURE REVIEW CHECKLIST

In contrast to review papers, the LR of a dissertation/thesis should not be a standalone piece or work. Instead, it should present the student as a scholar and should maintain the interest of the audience in how that dissertation/thesis will provide solutions for the current gaps in a particular field.

A checklist for evaluating an LR is convenient for students’ continuous academic development and research transparency: it clearly states the desired achievements for the LR of a dissertation/thesis. Here, we present an LR checklist developed from an LR scoring rubric ( 11 ). For a critical analysis of an LR, we maintain the five categories but offer twelve criteria that are not scaled ( Figure 3 ). The criteria all have the same importance and are not mutually exclusive.

First category: Coverage

1. justified criteria exist for the inclusion and exclusion of literature in the review.

This criterion builds on the main topic and areas covered by the LR ( 18 ). While experts may be confident in retrieving and selecting literature, postgraduate students must convince their audience about the adequacy of their search strategy and their reasons for intentionally selecting what material to cover ( 11 ). References from different fields of knowledge provide distinct perspective, but narrowing the scope of coverage may be important in areas with a large body of existing knowledge.

Second category: Synthesis

2. a critical examination of the state of the field exists.

A critical examination is an assessment of distinct aspects in the field ( 1 ) along with a constructive argument. It is not a negative critique but an expression of the student’s understanding of how other scholars have added to the topic ( 1 ), and the student should analyze and contextualize contradictory statements. A writer’s personal bias (beliefs or political involvement) have been shown to influence the structure and writing of a document; therefore, the cultural and paradigmatic background guide how the theories are revised and presented ( 13 ). However, an honest judgment is important when considering different perspectives.

3. The topic or problem is clearly placed in the context of the broader scholarly literature

The broader scholarly literature should be related to the chosen main topic for the LR ( how to develop the literature review section). The LR can cover the literature from one or more disciplines, depending on its scope, but it should always offer a new perspective. In addition, students should be careful in citing and referencing previous publications. As a rule, original studies and primary references should generally be included. Systematic and narrative reviews present summarized data, and it may be important to cite them, particularly for issues that should be understood but do not require a detailed description. Similarly, quotations highlight the exact statement from another publication. However, excessive referencing may disclose lower levels of analysis and synthesis by the student.

4. The LR is critically placed in the historical context of the field

Situating the LR in its historical context shows the level of comfort of the student in addressing a particular topic. Instead of only presenting statements and theories in a temporal approach, which occasionally follows a linear timeline, the LR should authentically characterize the student’s academic work in the state-of-art techniques in their particular field of knowledge. Thus, the LR should reinforce why the dissertation/thesis represents original work in the chosen research field.

5. Ambiguities in definitions are considered and resolved

Distinct theories on the same topic may exist in different disciplines, and one discipline may consider multiple concepts to explain one topic. These misunderstandings should be addressed and contemplated. The LR should not synthesize all theories or concepts at the same time. Although this approach might demonstrate in-depth reading on a particular topic, it can reveal a student’s inability to comprehend and synthesize his/her research problem.

6. Important variables and phenomena relevant to the topic are articulated

The LR is a unique opportunity to articulate ideas and arguments and to purpose new relationships between them ( 10 , 11 ). More importantly, a sound LR will outline to the audience how these important variables and phenomena will be addressed in the current academic work. Indeed, the LR should build a bidirectional link with the remaining sections and ground the connections between all of the sections ( Figure 1 ).

7. A synthesized new perspective on the literature has been established

The LR is a ‘creative inquiry’ ( 13 ) in which the student elaborates his/her own discourse, builds on previous knowledge in the field, and describes his/her own perspective while interpreting others’ work ( 13 , 17 ). Thus, students should articulate the current knowledge, not accept the results at face value ( 11 , 13 , 17 ), and improve their own cognitive abilities ( 12 ).

Third category: Methodology

8. the main methodologies and research techniques that have been used in the field are identified and their advantages and disadvantages are discussed.

The LR is expected to distinguish the research that has been completed from investigations that remain to be performed, address the benefits and limitations of the main methods applied to date, and consider the strategies for addressing the expected limitations described above. While placing his/her research within the methodological context of a particular topic, the LR will justify the methodology of the study and substantiate the student’s interpretations.

9. Ideas and theories in the field are related to research methodologies

The audience expects the writer to analyze and synthesize methodological approaches in the field. The findings should be explained according to the strengths and limitations of previous research methods, and students must avoid interpretations that are not supported by the analyzed literature. This criterion translates to the student’s comprehension of the applicability and types of answers provided by different research methodologies, even those using a quantitative or qualitative research approach.

Fourth category: Significance

10. the scholarly significance of the research problem is rationalized.

The LR is an introductory section of a dissertation/thesis and will present the postgraduate student as a scholar in a particular field ( 11 ). Therefore, the LR should discuss how the research problem is currently addressed in the discipline being investigated or in different disciplines, depending on the scope of the LR. The LR explains the academic paradigms in the topic of interest ( 13 ) and methods to advance the field from these starting points. However, an excess number of personal citations—whether referencing the student’s research or studies by his/her research team—may reflect a narrow literature search and a lack of comprehensive synthesis of ideas and arguments.

11. The practical significance of the research problem is rationalized

The practical significance indicates a student’s comprehensive understanding of research terminology (e.g., risk versus associated factor), methodology (e.g., efficacy versus effectiveness) and plausible interpretations in the context of the field. Notably, the academic argument about a topic may not always reflect the debate in real life terms. For example, using a quantitative approach in epidemiology, statistically significant differences between groups do not explain all of the factors involved in a particular problem ( 21 ). Therefore, excessive faith in p -values may reflect lower levels of critical evaluation of the context and implications of a research problem by the student.

Fifth category: Rhetoric

12. the lr was written with a coherent, clear structure that supported the review.

This category strictly relates to the language domain: the text should be coherent and presented in a logical sequence, regardless of which organizational ( 18 ) approach is chosen. The beginning of each section/subsection should state what themes will be addressed, paragraphs should be carefully linked to each other ( 10 ), and the first sentence of each paragraph should generally summarize the content. Additionally, the student’s statements are clear, sound, and linked to other scholars’ works, and precise and concise language that follows standardized writing conventions (e.g., in terms of active/passive voice and verb tenses) is used. Attention to grammar, such as orthography and punctuation, indicates prudence and supports a robust dissertation/thesis. Ultimately, all of these strategies provide fluency and consistency for the text.

Although the scoring rubric was initially proposed for postgraduate programs in education research, we are convinced that this checklist is a valuable tool for all academic areas. It enables the monitoring of students’ learning curves and a concentrated effort on any criteria that are not yet achieved. For institutions, the checklist is a guide to support supervisors’ feedback, improve students’ writing skills, and highlight the learning goals of each program. These criteria do not form a linear sequence, but ideally, all twelve achievements should be perceived in the LR.

CONCLUSIONS

A single correct method to classify, evaluate and guide the elaboration of an LR has not been established. In this essay, we have suggested directions for planning, structuring and critically evaluating an LR. The planning of the scope of an LR and approaches to complete it is a valuable effort, and the five steps represent a rational starting point. An institutional environment devoted to active learning will support students in continuously reflecting on LRs, which will form a dialogue between the writer and the current literature in a particular field ( 13 ).

The completion of an LR is a challenging and necessary process for understanding one’s own field of expertise. Knowledge is always transitory, but our responsibility as scholars is to provide a critical contribution to our field, allowing others to think through our work. Good researchers are grounded in sophisticated LRs, which reveal a writer’s training and long-lasting academic skills. We recommend using the LR checklist as a tool for strengthening the skills necessary for critical academic writing.

AUTHOR CONTRIBUTIONS

Leite DFB has initially conceived the idea and has written the first draft of this review. Padilha MAS and Cecatti JG have supervised data interpretation and critically reviewed the manuscript. All authors have read the draft and agreed with this submission. Authors are responsible for all aspects of this academic piece.

ACKNOWLEDGMENTS

We are grateful to all of the professors of the ‘Getting Started with Graduate Research and Generic Skills’ module at University College Cork, Cork, Ireland, for suggesting and supporting this article. Funding: DFBL has granted scholarship from Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES) to take part of her Ph.D. studies in Ireland (process number 88881.134512/2016-01). There is no participation from sponsors on authors’ decision to write or to submit this manuscript.

No potential conflict of interest was reported.

1 The questions posed in systematic reviews usually follow the ‘PICOS’ acronym: Population, Intervention, Comparison, Outcomes, Study design.

2 In 1988, Cooper proposed a taxonomy that aims to facilitate students’ and institutions’ understanding of literature reviews. Six characteristics with specific categories are briefly described: Focus: research outcomes, research methodologies, theories, or practices and applications; Goals: integration (generalization, conflict resolution, and linguistic bridge-building), criticism, or identification of central issues; Perspective: neutral representation or espousal of a position; Coverage: exhaustive, exhaustive with selective citations, representative, central or pivotal; Organization: historical, conceptual, or methodological; and Audience: specialized scholars, general scholars, practitioners or policymakers, or the general public.

Literature review sources

Sources for literature review can be divided into three categories as illustrated in table below. In your dissertation you will need to use all three categories of literature review sources:

Sources for literature review and examples

Generally, your literature review should integrate a wide range of sources such as:

• Books . Textbooks remain as the most important source to find models and theories related to the research area. Research the most respected authorities in your selected research area and find the latest editions of books authored by them. For example, in the area of marketing the most notable authors include Philip Kotler, Seth Godin, Malcolm Gladwell, Emanuel Rosen and others.
• Magazines . Industry-specific magazines are usually rich in scholarly articles and they can be effective source to learn about the latest trends and developments in the research area. Reading industry magazines can be the most enjoyable part of the literature review, assuming that your selected research area represents an area of your personal and professional interests, which should be the case anyways.
• Newspapers can be referred to as the main source of up-to-date news about the latest events related to the research area. However, the proportion of the use of newspapers in literature review is recommended to be less compared to alternative sources of secondary data such as books and magazines. This is due to the fact that newspaper articles mainly lack depth of analyses and discussions.
• Online articles . You can find online versions of all of the above sources. However, note that the levels of reliability of online articles can be highly compromised depending on the source due to the high levels of ease with which articles can be published online. Opinions offered in a wide range of online discussion blogs cannot be usually used in literature review. Similarly, dissertation assessors are not keen to appreciate references to a wide range of blogs, unless articles in these blogs are authored by respected authorities in the research area.

Your secondary data sources may comprise certain amount of grey literature as well. The term grey literature refers to type of literature produced by government, academics, business and industry in print and electronic formats, which is not controlled by commercial publishers. It is called ‘grey’ because the status of the information in grey literature is not certain. In other words, any publication that has not been peer reviewed for publication is grey literature.

The necessity to use grey literature arises when there is no enough peer reviewed publications are available for the subject of your study.

John Dudovskiy

Frequently asked questions

What is a literature review.

A literature review is a survey of scholarly sources (such as books, journal articles, and theses) related to a specific topic or research question .

It is often written as part of a thesis, dissertation , or research paper , in order to situate your work in relation to existing knowledge.

Frequently asked questions: Academic writing

A rhetorical tautology is the repetition of an idea of concept using different words.

Rhetorical tautologies occur when additional words are used to convey a meaning that has already been expressed or implied. For example, the phrase “armed gunman” is a tautology because a “gunman” is by definition “armed.”

A logical tautology is a statement that is always true because it includes all logical possibilities.

Logical tautologies often take the form of “either/or” statements (e.g., “It will rain, or it will not rain”) or employ circular reasoning (e.g., “she is untrustworthy because she can’t be trusted”).

You may have seen both “appendices” or “appendixes” as pluralizations of “ appendix .” Either spelling can be used, but “appendices” is more common (including in APA Style ). Consistency is key here: make sure you use the same spelling throughout your paper.

The purpose of a lab report is to demonstrate your understanding of the scientific method with a hands-on lab experiment. Course instructors will often provide you with an experimental design and procedure. Your task is to write up how you actually performed the experiment and evaluate the outcome.

In contrast, a research paper requires you to independently develop an original argument. It involves more in-depth research and interpretation of sources and data.

A lab report is usually shorter than a research paper.

The sections of a lab report can vary between scientific fields and course requirements, but it usually contains the following:

• Title: expresses the topic of your study
• Abstract: summarizes your research aims, methods, results, and conclusions
• Introduction: establishes the context needed to understand the topic
• Method: describes the materials and procedures used in the experiment
• Results: reports all descriptive and inferential statistical analyses
• Discussion: interprets and evaluates results and identifies limitations
• Conclusion: sums up the main findings of your experiment
• References: list of all sources cited using a specific style (e.g. APA)
• Appendices: contains lengthy materials, procedures, tables or figures

A lab report conveys the aim, methods, results, and conclusions of a scientific experiment . Lab reports are commonly assigned in science, technology, engineering, and mathematics (STEM) fields.

The abstract is the very last thing you write. You should only write it after your research is complete, so that you can accurately summarize the entirety of your thesis , dissertation or research paper .

If you’ve gone over the word limit set for your assignment, shorten your sentences and cut repetition and redundancy during the editing process. If you use a lot of long quotes , consider shortening them to just the essentials.

If you need to remove a lot of words, you may have to cut certain passages. Remember that everything in the text should be there to support your argument; look for any information that’s not essential to your point and remove it.

To make this process easier and faster, you can use a paraphrasing tool . With this tool, you can rewrite your text to make it simpler and shorter. If that’s not enough, you can copy-paste your paraphrased text into the summarizer . This tool will distill your text to its core message.

Revising, proofreading, and editing are different stages of the writing process .

• Revising is making structural and logical changes to your text—reformulating arguments and reordering information.
• Editing refers to making more local changes to things like sentence structure and phrasing to make sure your meaning is conveyed clearly and concisely.
• Proofreading involves looking at the text closely, line by line, to spot any typos and issues with consistency and correct them.

The literature review usually comes near the beginning of your thesis or dissertation . After the introduction , it grounds your research in a scholarly field and leads directly to your theoretical framework or methodology .

There are several reasons to conduct a literature review at the beginning of a research project:

• To familiarize yourself with the current state of knowledge on your topic
• To ensure that you’re not just repeating what others have already done
• To identify gaps in knowledge and unresolved problems that your research can address
• To develop your theoretical framework and methodology
• To provide an overview of the key findings and debates on the topic

Writing the literature review shows your reader how your work relates to existing research and what new insights it will contribute.

Avoid citing sources in your abstract . There are two reasons for this:

• The abstract should focus on your original research, not on the work of others.
• The abstract should be self-contained and fully understandable without reference to other sources.

There are some circumstances where you might need to mention other sources in an abstract: for example, if your research responds directly to another study or focuses on the work of a single theorist. In general, though, don’t include citations unless absolutely necessary.

An abstract is a concise summary of an academic text (such as a journal article or dissertation ). It serves two main purposes:

• To help potential readers determine the relevance of your paper for their own research.
• To communicate your key findings to those who don’t have time to read the whole paper.

Abstracts are often indexed along with keywords on academic databases, so they make your work more easily findable. Since the abstract is the first thing any reader sees, it’s important that it clearly and accurately summarizes the contents of your paper.

In a scientific paper, the methodology always comes after the introduction and before the results , discussion and conclusion . The same basic structure also applies to a thesis, dissertation , or research proposal .

Depending on the length and type of document, you might also include a literature review or theoretical framework before the methodology.

Whether you’re publishing a blog, submitting a research paper , or even just writing an important email, there are a few techniques you can use to make sure it’s error-free:

• Take a break : Set your work aside for at least a few hours so that you can look at it with fresh eyes.
• Proofread a printout : Staring at a screen for too long can cause fatigue – sit down with a pen and paper to check the final version.
• Use digital shortcuts : Take note of any recurring mistakes (for example, misspelling a particular word, switching between US and UK English , or inconsistently capitalizing a term), and use Find and Replace to fix it throughout the document.

If you want to be confident that an important text is error-free, it might be worth choosing a professional proofreading service instead.

Editing and proofreading are different steps in the process of revising a text.

Editing comes first, and can involve major changes to content, structure and language. The first stages of editing are often done by authors themselves, while a professional editor makes the final improvements to grammar and style (for example, by improving sentence structure and word choice ).

Proofreading is the final stage of checking a text before it is published or shared. It focuses on correcting minor errors and inconsistencies (for example, in punctuation and capitalization ). Proofreaders often also check for formatting issues, especially in print publishing.

The cost of proofreading depends on the type and length of text, the turnaround time, and the level of services required. Most proofreading companies charge per word or page, while freelancers sometimes charge an hourly rate.

For proofreading alone, which involves only basic corrections of typos and formatting mistakes, you might pay as little as $0.01 per word, but in many cases, your text will also require some level of editing , which costs slightly more.

It’s often possible to purchase combined proofreading and editing services and calculate the price in advance based on your requirements.

There are many different routes to becoming a professional proofreader or editor. The necessary qualifications depend on the field – to be an academic or scientific proofreader, for example, you will need at least a university degree in a relevant subject.

For most proofreading jobs, experience and demonstrated skills are more important than specific qualifications. Often your skills will be tested as part of the application process.

To learn practical proofreading skills, you can choose to take a course with a professional organization such as the Society for Editors and Proofreaders . Alternatively, you can apply to companies that offer specialized on-the-job training programmes, such as the Scribbr Academy .

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Dissertations/Theses: Literature Review

• Writing Your Dissertation or Thesis
• Books & eBooks
• Evaluating Sources
• Literature Review
• Citation Styles
• RefWorks and Other Citation Tools This link opens in a new window
• Formatting Your Dissertation/Thesis
• Submitting Your Dissertation/Thesis

What is a Literature Review?

A  Literature Review  is a summary and assessment of the key research on a specific topic. It is not a research study itself, although research studies will often include a literature review. Literature reviews are considered secondary sources because they provide an overview of published research on a topic. They also reflect the relationship between research studies, how one study builds on the findings of an earlier study, as well as what each study contributes to scholarship on the topic.

Here are a few links with further information:

http://library.ucsc.edu/ref/howto/literaturereview.html

http://writingcenter.unc.edu/handouts/literature-reviews/

https://owl.purdue.edu/owl/research_and_citation/conducting_research/writing_a_literature_review.html

Writing Literature Reviews

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• Next: Citation Styles >>
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Writing a dissertation or thesis proposal.

• Introduction
• Video Tutorials
• Select a Topic
• Research Questions

Goal of Literature Search

What is peer review, resources for searching, use catalog and databases first.

• Plan Before Reviewing
• Review the Literature
• Write the Review
• IRB Approval

The overall goals of the literature search are 1) to refine your topic, and 2) then find as much relevant information as possible on your topic, within reason. Talk to your advisor to get guidance on this. You many not need to do the full-fledged literature review for your proposal. 

Here are objectives that will help you meet the goals of the literature search:

• Determine the most important databases for your discipline and topic
• Search for all source types allowed or relevant for your topic, e.g., books, articles, reviews, dissertations and theses, websites, films, etc.
• Find peer-reviewed empirical and theoretical literature
• Find peer-reviewed primary and secondary sources. A previously published literature review related to your topic is an invaluable source for developing your topic and finding the important literature.
• Develop an understanding of the academic terminology for your topic
• Determine the time frame for the literature review

Many instructors require you to use peer-reviewed sources for your papers and projects, but what does that mean?

• Peer review is the process of having experts in a field review the quality of an article or book before it is published
• Most articles in scholarly and academic journals are peer-reviewed
• Books published by university or academic presses are peer-reviewed

Most databases allow you to limit your search to peer-reviewed articles. Here are two examples:

• Academic search complete Check the "Scholarly (Peer-Reviewed) Journals" box under "Limit Your Results"
• Research library Select "peer-reviewed" beneath the search box.

The UNT Libraries have all the sources and search tools you need for your literature review. Our collections contain books, journals, dissertations and theses, films, music and more. Use these search tools to conduct your literature review:

• Basic and Advanced Library Research A comprehensive webpage on how to do advanced research at the UNT Libraries.

• UNT Electronic Resources Find journal articles, conference proceedings, book reviews, and more using online databases. Some documents will be full text, and in other cases, the database will refer you to the print version at the Libraries.

• Interlibrary Loan Borrowing If the Libraries don't own an article or book you want, then request the item through interlibrary loan (ILL). In most cases, this service is free.

Why? Because you can do much broader searches in the UNT library catalog and online databases than within full text journal or book packages. 

You don't want to miss any important sources on your topic that are in print at UNT or that are online or in print at another library. The UNT library catalog and databases will link you to the full text journal and book packages, so start your searches in the catalog for books and in electronic databases for journal articles.

What's the difference between a catalog/database and a full text package? A catalog/database has the following characteristics:

• a catalog includes thousands or millions of records for books, films, music, microforms, etc.
• a database includes the citations and abstracts (summaries) for thousands of journal articles, book chapters, newspaper articles, etc.
• may or may not include full text of the documents
• sophisticated searching capabilities
• examples - EBSCOhost databases, Web of Knowledge, Lexis Nexis Academic, UNT library catalog

A full text package has the following characteristics:

• contains the full text of a limited number of electronic journals or books (two dozen to 2000), usually from one publisher
• basic search capabilities
• examples - ScienceDirect, JSTOR, Sage Journals Online

Need help? Then use the library's  Ask Us service. Get help from real people face-to-face, by phone, or by email.

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Dissertations and Theses

• Finding dissertations and theses
• Resources for writing & submitting a thesis or dissertation

Dissertations and theses as a research tool

Obtaining theses & dissertations written at other institutions, citing dissertations and theses, databases focused on dissertations and theses, sources indexing dissertations and theses, print dissertation indexes and bibliographies.

Theses and dissertations can be a valuable source of information for research.  They can offer the following benefits:

• Just like journal articles, conference proceedings, and other forms of literature, they present original research. Recently completed theses can provide "sneak previews" of ideas and findings that have yet to reach the public via other publication formats.
• They may be the only publicly-available work by authors who do not otherwise publish for general audiences or through commercial publishers.
• They contain extensive bibliographies.
• They provide inspiration for the formatting and presentation of ideas, graphs, charts, and other components of a document.
• They provide insight into the early work of a particular person and have value for historical and biographical purposes.

Want to borrow a thesis or dissertation written at another institution that isn't available in  full text online ? Request it via  ILLIAD , Tufts' interlibrary loan service. Choose the "Thesis" request form and provide as much descriptive information as you can. Not all theses or dissertations are available or loanable, but we'll try to find you a copy!

Some other ways you might be able to find a copy of an older dissertation:

If you can identify the author's institutional affiliation, visit that institution's webpage to see if they catalog or archive students' dissertations. 

Contact the author.  Some authors will post all or some of their dissertation on their website or have journal articles or other publications which draw heavily on this work.

Search the author's name and/or thesis title in full-text journal databases which include article references. These citations may provide clues as to how to locate the document.

Contact your  subject librarian  for assistance.

As with journal articles, books, and other sources, theses and dissertations must be properly cited in any document that references them.  Most citation styles, including APA, Chicago, and MLA, provide specific instructions for formatting these citations.  Citation Management tools, such as EndNote and Zotero, automatically format references for these sources in your selected citation style.  More information is in the Citing Sources guide.

Although requirements for citing dissertations vary according by style, they generally seek to convey the following information:  that the item is a dissertation (rather than an article or a book); the type of degree it resulted in (master's, PhD, etc); whether it was published; and which institution granted the degree.  An example of a citation for a dissertation is presented here in four major citation styles:

• APA:   Miaoulis, I. N. (1987). Experimental investigation of turbulence spectra of charge density fluctuations in the equilibrium range. Unpublished Ph.D., Tufts University, United States -- Massachusetts.
• Chicago:   Miaoulis, Ioannis Nikolaos. "Experimental Investigation of Turbulence Spectra of Charge Density Fluctuations in the Equilibrium Range." Ph.D., Tufts University, 1987.
• IEEE:   [1]    I. N. Miaoulis, "Experimental investigation of turbulence spectra of charge density fluctuations in the equilibrium range,"  United States -- Massachusetts: Tufts University, 1987, p. 98.
• MLA:   Miaoulis, Ioannis Nikolaos. "Experimental Investigation of Turbulence Spectra of Charge Density Fluctuations in the Equilibrium Range." Ph.D. Tufts University, 1987.

The following sources focus primarily or exclusively on theses and dissertations; some provide direct access to full-text.

• DART-Europe E-theses Portal "A partnership of research libraries and library consortia who are working together to improve global access to European research theses."
• Dissertations & Theses: Full Text Comprehensive collection of dissertations and theses worldwide. Of the over 2 million titles in the database, more than 930,000 are available in PDF format for free download. Those that aren't freely available can be ordered from within the database.
• DSpace@MIT Over 25,000 theses and dissertations from all MIT departments completed as far back as the mid 1800's. Note that this is NOT a complete collection of MIT theses.
• Networked Digital Library of Theses and Dissertations (NDLTD) Search engine for graduate papers completed at universities both in America and abroad.
• Open Access Theses and Dissertations (OATD) Open access (OA) theses and dissertations from institutions worldwide.
• Ethos Service from the British Library for reading and ordering theses produced by students in the United Kingdom.
• Theses Canada Theses from over 60 Canadian universities, going back to 1965.
• Shodhganga@INFLIBNET Centre Digital repository of theses and dissertations from universities in India.

In the following subject-specific databases, the Advance Search option enables filtering by dissertation as the document type.

• American Bibliography of Slavic and East European Studies Sources on East-Central Europe and the former Soviet Union.
• ARTbibliographies Modern Sources on all forms of modern and contemporary art.
• EconLit Economic literature.
• Engineering Village For literature on all engineering disciplines.
• PsycInfo Sources on psychology and related disciplines.
• Sociological Abstracts For the literature on sociology.
• SPORTDiscus with Full Text Sources on sport, physical fitness, and physical education.
• World Shakespeare Bibliography Sources on materials published since 1971 related to Shakespeare.

A number of indexes and bibliographies of dissertations have been published, primarily in print format.  These often focus on specific historical eras, geographic regions, or topics.

• Dissertation Indexes in the Tufts Catalog
• Dissertation Indexes in WorldCat
• Dissertation Indexes in Google Books
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• URL: https://researchguides.library.tufts.edu/theses

How to Conduct a Literature Review: A Guide for Graduate Students

• Let's Get Started!
• Traditional or Narrative Reviews
• Systematic Reviews
• Typology of Reviews
• Literature Review Resources
• Developing a Search Strategy
• What Literature to Search
• Where to Search: Indexes and Databases
• Finding articles: Libkey Nomad
• Finding Dissertations and Theses
• Extending Your Searching with Citation Chains
• Forward Citation Chains - Cited Reference Searching
• Keeping up with the Literature
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   “Google can bring you back 100,000 answers. A librarian can bring you back the right one.” - Neil Gaiman

The literature review is an important part of your thesis or dissertation. It is a survey of existing literature that provides context for your research contribution, and demonstrates your subject knowledge. It is also the way to tell the story of how your research extends knowledge in your field.

The first step to writing a successful literature review is knowing how to find and evaluate literature in your field. This guide is designed to introduce you to tools and give you skills you can use to effectively find the resources needed for your literature review.

Before getting started, familiarize yourself with some essential resources provided by the Graduate College:

• Dissertation and Thesis Information
• Center for Communication Excellence
• Graduate College Handbook

Below are some questions that you can discuss with your advisor as you begin your research:

Questions to ask as you think about your literature review:

What is my research question.

Choosing a valid research question is something you will need to discuss with your academic advisor and/or POS committee. Ideas for your topic may come from your coursework, lab rotations, or work as a research assistant. Having a specific research topic allows you to focus your research on a project that is manageable. Beginning work on your literature review can help narrow your topic.

What kind of literature review is appropriate for my research question?

Depending on your area of research, the type of literature review you do for your thesis will vary. Consult with your advisor about the requirements for your discipline. You can view theses and dissertations from your field in the library's Digital Repository can give you ideas about how your literature review should be structured.

What kind of literature should I use?

The kind of literature you use for your thesis will depend on your discipline. The Library has developed a list of Guides by Subject with discipline-specific resources. For a given subject area, look for the guide titles "[Discipline] Research Guide." You may also consult our liaison librarians for information about the literature available your research area.

How will I make sure that I find all the appropriate information that informs my research?

Consulting multiple sources of information is the best way to insure that you have done a comprehensive search of the literature in your area. The What Literature to Search tab has information about the types of resources you may need to search. You may also consult our liaison librarians for assistance with identifying resources..

How will I evaluate the literature to include trustworthy information and eliminate unnecessary or untrustworthy information?

While you are searching for relevant information about your topic you will need to think about the accuracy of the information, whether the information is from a reputable source, whether it is objective and current. Our guides about Evaluating Scholarly Books and Articles and Evaluating Websites will give you criteria to use when evaluating resources.

How should I organize my literature? What citation management program is best for me?

Citation management software can help you organize your references in folders and/or with tags. You can also annotate and highlight the PDFs within the software and usually the notes are searchable. To choose a good citation management software, you need to consider which one can be streamlined with your literature search and writing process. Here is a guide page comparing EndNote, Mendeley & Zotero. The Library also has guides for three of the major citation management tools:

• EndNote & EndNote Web Guide
• Mendeley Guide
• Getting Started with Zotero

What steps should I take to ensure academic integrity?

The best way to ensure academic integrity is to familiarize yourself with different types of intentional and unintentional plagiarism and learn about the University's standards for academic integrity. Start with this guide . The Library also has a guide about your rights and responsibilities regarding copyrighted images and figures that you include in your thesis.

Where can I find writing and editing help?

Writing and editing help is available at the Graduate College's Center for Communication Excellence . The CCE offers individual consultations, peer writing groups, workshops and seminars to help you improve your writing.

Where can I find I find formatting standards? Technical support?

The Graduate College has a Dissertation/ Thesis website with extensive examples and videos about formatting theses and dissertations. The site also has templates and formatting instructions for Word and LaTex .

What citation style should I use?

The Graduate College thesis guidelines require that you "use a consistent, current academic style for your discipline." The Library has a Citation Style Guides resource you can use for guidance on specific citation styles. If you are not sure, please consult your advisor or liaison librarians for help.

Adapted from The Literature Review: For Dissertations, by the University of Michigan Library. Available: https://guides.lib.umich.edu/dissertationlitreview

Center for Communication Excellence/ Library Workshop Slides

Slides from the CCE/ Library Workshop "A Citation Here...A Citation There...Pretty Soon You'll Have a Lit Review" held on February 21, 2024 are below:

• CCE Workshop February 21, 2024
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What is a thesis?

What is a dissertation, getting started, staying on track.

A thesis is a long-term project that you work on over the course of a semester or a year. Theses have a very wide variety of styles and content, so we encourage you to look at prior examples and work closely with faculty to develop yours. 

Before you begin, make sure that you are familiar with the dissertation genre—what it is for and what it looks like.

Generally speaking, a dissertation’s purpose is to prove that you have the expertise necessary to fulfill your doctoral-degree requirements by showing depth of knowledge and independent thinking.

The form of a dissertation may vary by discipline. Be sure to follow the specific guidelines of your department.

• PhD This site directs candidates to the GSAS website about dissertations , with links to checklists,  planning, formatting, acknowledgments, submission, and publishing options. There is also a link to guidelines for the prospectus . Consult with your committee chair about specific requirements and standards for your dissertation.
• DDES This document covers planning, patent filing, submission guidelines, publishing options, formatting guidelines, sample pages, citation guidelines, and a list of common errors to avoid. There is also a link to guidelines for the prospectus .
• Scholarly Pursuits (GSAS) This searchable booklet from Harvard GSAS is a comprehensive guide to writing dissertations, dissertation-fellowship applications, academic journal articles, and academic job documents.

Finding an original topic can be a daunting and overwhelming task. These key concepts can help you focus and save time.

Finding a topic for your thesis or dissertation should start with a research question that excites or at least interests you. A rigorous, engaging, and original project will require continuous curiosity about your topic, about your own thoughts on the topic, and about what other scholars have said on your topic. Avoid getting boxed in by thinking you know what you want to say from the beginning; let your research and your writing evolve as you explore and fine-tune your focus through constant questioning and exploration.

Get a sense of the broader picture before you narrow your focus and attempt to frame an argument. Read, skim, and otherwise familiarize yourself with what other scholars have done in areas related to your proposed topic. Briefly explore topics tangentially related to yours to broaden your perspective and increase your chance of finding a unique angle to pursue.

Critical Reading

Critical reading is the opposite of passive reading. Instead of merely reading for information to absorb, critical reading also involves careful, sustained thinking about what you are reading. This process may include analyzing the author’s motives and assumptions, asking what might be left out of the discussion, considering what you agree with or disagree with in the author’s statements and why you agree or disagree, and exploring connections or contradictions between scholarly arguments. Here is a resource to help hone your critical-reading skills:

http://writing.umn.edu/sws/assets/pdf/quicktips/criticalread.pdf

Conversation

Your thesis or dissertation will incorporate some ideas from other scholars whose work you researched. By reading critically and following your curiosity, you will develop your own ideas and claims, and these contributions are the core of your project. You will also acknowledge the work of scholars who came before you, and you must accurately and fairly attribute this work and define your place within the larger discussion. Make sure that you know how to quote, summarize, paraphrase ,  integrate , and cite secondary sources to avoid plagiarism and to show the depth and breadth of your knowledge.

A thesis is a long-term, large project that involves both research and writing; it is easy to lose focus, motivation, and momentum. Here are suggestions for achieving the result you want in the time you have.

The dissertation is probably the largest project you have undertaken, and a lot of the work is self-directed. The project can feel daunting or even overwhelming unless you break it down into manageable pieces and create a timeline for completing each smaller task. Be realistic but also challenge yourself, and be forgiving of yourself if you miss a self-imposed deadline here and there.

Your program will also have specific deadlines for different requirements, including establishing a committee, submitting a prospectus, completing the dissertation, defending the dissertation, and submitting your work. Consult your department’s website for these dates and incorporate them into the timeline for your work.

Accountability

Sometimes self-imposed deadlines do not feel urgent unless there is accountability to someone beyond yourself. To increase your motivation to complete tasks on schedule, set dates with your committee chair to submit pre-determined pieces of a chapter. You can also arrange with a fellow doctoral student to check on each other’s progress. Research and writing can be lonely, so it is also nice to share that journey with someone and support each other through the process.

Common Pitfalls

The most common challenges for students writing a dissertation are writer’s block, information-overload, and the compulsion to keep researching forever.

There are many strategies for avoiding writer’s block, such as freewriting, outlining, taking a walk, starting in the middle, and creating an ideal work environment for your particular learning style. Pay attention to what helps you and try different things until you find what works.

Efficient researching techniques are essential to avoiding information-overload. Here are a couple of resources about strategies for finding sources and quickly obtaining essential information from them.

https://owl.purdue.edu/owl/subject_specific_writing/writing_in_literature/writing_in_literature_detailed_discussion/reading_criticism.html

https://students.dartmouth.edu/academic-skills/learning-resources/learning-strategies/reading-techniques

Finally, remember that there is always more to learn and your dissertation cannot incorporate everything. Follow your curiosity but also set limits on the scope of your work. It helps to create a folder entitled “future projects” for topics and sources that interest you but that do not fit neatly into the dissertation. Also remember that future scholars will build off of your work, so leave something for them to do.

Browsing through theses and dissertations of the past can help to get a sense of your options and gain inspiration but be careful to use current guidelines and refer to your committee instead of relying on these examples for form or formatting.

DASH Digital Access to Scholarship at Harvard.

HOLLIS Harvard Library’s catalog provides access to ProQuest Dissertations & Theses Global .

MIT Architecture has a list of their graduates’ dissertations and theses.

Rhode Island School of Design has a list of their graduates’ dissertations and theses.

University of South Florida has a list of their graduates’ dissertations and theses.

Harvard GSD has a list of projects, including theses and professors’ research.

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Why search this literature?

It is crucial for graduate students to search the thesis and dissertation literature to make sure that an idea or hypothesis has not already been tested, explored, and published.  An additional reason to search this literature is that it is rich with ideas and information not found elsewhere.  If graduate students do not continue on as academics or if students that came after them in their programs did not continue their research, this literature may be the end of the line for scholarship on a topic.

ProQuest has published dissertation e-learning modules covering the usefulness of using dissertations as a research source.  See link below:

• Dissertation eLearning resources from ProQuest Uncover the value of dissertations.

Library Databases

All graduate students should, at minimum, search the ProQuest Dissertations & Theses Global database (PQDT) to see if the research they are proposing to do has already been done by a student at another institution/university.  RIT dissertations and theses have been included in PQDT since approximately 2006.

• Proquest Dissertations & Theses Global This link opens in a new window Identifies Ph.D. dissertations from U.S. & Canadian universities since 1861. Abstracts from 1980. Master's theses from 1988. Many with full-text.

RIT Digital Institutional Repository

• Digital Institutional Repository The digital institutional repository for the Rochester Institute of Technology, managed by RIT Libraries.
• ProQuest - Most Accessed Dissertations/Theses

Each month ProQuest updates this list of the top 25 Most-Accessed Dissertations and Theses across all subjects, based upon total PDF downloads. Find out what is trending.

The web sites below should also be consulted as appropriate to perform a full and thorough review of the dissertation and thesis literature beyond your introductory search of ProQuest Dissertations and Theses Global.  Consider whether a particular country or part of the world would have an interest in your potential research topic.

Only large-scale repositories of dissertations and theses are included here. You may also need to search individual university repositories directly.

• Ebsco Open Dissertations Search thousands of open dissertations and theses from over 50 participating libraries.
• EThOS (from the British Library) EThOS offers a 'single point of access' where researchers the world over can access ALL theses produced by UK Higher Education.
• Indian Institute of Science Dissertations and theses from the Indian Institute of Science, Bangalore, India.
• Indian Theses and Dissertations (Shodhganga) Over 130 participating Indian universities and over 8800 ETD documents.
• National ETD Portal (South Africa) South African theses and dissertations.
• Networked Digital Library of Theses and Dissertations The Networked Digital Library of Theses and Dissertations (NDLTD), is an international organization dedicated to promoting the adoption, creation, use, dissemination, and preservation of electronic theses and dissertations (ETDs). The NDLTD Union Catalog contains more than one million records of electronic theses and dissertations. Search the Union Catalog from here: http://thumper.vtls.com:6090/?theme=NDLTD
• OhioLINK ETD Center Electronic theses and dissertations from colleges and universities in the state of Ohio.
• Open Access Theses and Dissertations OATD aims to be the best possible resource for finding open access graduate theses and dissertations published around the world. Metadata (information about the theses) comes from over 600 colleges, universities, and research institutions. OATD currently indexes over 1.5 million theses and dissertations. RIT is included.
• Theses Canada Canadian universities voluntarily participate by submitting approved theses and dissertation to Theses Canada. Click on "Search Theses Canada" under the Introduction on the left hand side of the page to begin your search.
• TROVE From the National Library of Australia - Search Trove to explore amazing collections from Australian libraries, universities, museums, galleries and archives.
• Next: Thesis Writing Guides >>

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Are dissertations and theses considered scholarly or peer-reviewed resources?

Dissertations and theses may be considered scholarly sources since they are closely supervised by a dissertation committee made up of scholars, are directed at an academic audience, are extensively researched, follow research methodology, and are cited in other scholarly work.

However, dissertations are still considered student work and are  not  peer-reviewed. Always clarify with your instructor or chair as to whether you can include and cite dissertations and theses in your research.

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OATD.org aims to be the best possible resource for finding open access graduate theses and dissertations published around the world. Metadata (information about the theses) comes from over 1100 colleges, universities, and research institutions . OATD currently indexes 6,912,508 theses and dissertations.

About OATD (our FAQ) .

Visual OATD.org

We’re happy to present several data visualizations to give an overall sense of the OATD.org collection by county of publication, language, and field of study.

You may also want to consult these sites to search for other theses:

• Google Scholar
• NDLTD , the Networked Digital Library of Theses and Dissertations. NDLTD provides information and a search engine for electronic theses and dissertations (ETDs), whether they are open access or not.
• Proquest Theses and Dissertations (PQDT), a database of dissertations and theses, whether they were published electronically or in print, and mostly available for purchase. Access to PQDT may be limited; consult your local library for access information.

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What is the Difference Between a Dissertation and a Thesis?

Find your perfect postgrad program search our database of 30,000 courses.

And to make it even more confusing, some institutions or departments will even use the terms differently!

But what are we all really talking about when we refer to a dissertation or a thesis? And does the term you use actually impact on what you actually end up writing?

This article covers the main differences between a dissertation and thesis, and how the terms may differ depending on the course, university and location.

What is a dissertation?

A dissertation is a piece of academic writing centred around original research. In their dissertations, students review existing research but also build on this with unique hypotheses and approaches.

A dissertation can be used to disprove a previous theory or take existing theories and research in a new direction. It is a large research project that is usually completed at the end of the academic year.

Usually, a dissertation starts with a dissertation proposal , which is approved by a study supervisor. The student then completes the research and writes up the methodology , findings, evaluations and conclusions from the research.

Dissertations can be undertaken by both undergraduate and postgraduate students. At undergraduate level the word count is around 5,000 to 8,000 and at postgraduate level it is usually 10,000 to 15,000.

What is a thesis?

A thesis is an academic paper covering an in-depth review of existing research in a particular discipline. It will involve an academic argument, although it doesn’t usually require original research from the student. The existing research is used to support and evaluate the proposed argument.

A thesis is not usually required at undergraduate level and is more common at postgraduate level.

This large piece of written-up research is usually completed at the end of a masters degree. Some masters courses require a thesis to graduate.

Differences between a dissertation vs thesis

The main purpose of a writing a dissertation is to add new findings to the existing literature in that field with original research. Whereas theses tend to evaluate existing findings, as their purpose is to demonstrate knowledge and skills within the course’s subject matter.

In terms of how long it takes to complete a thesis or dissertation project, a thesis is typically shorter than a dissertation since there are fewer original research aspects involved. This means that it will probably take less time. However, this can differ depending on the university and the course.

Dissertations sometimes require an oral presentation, known as a viva , where findings are showcased to academics who ask questions about the research. Theses usually do not require this.

The root of the words 

The word ‘dissertation’ originates from the Latin word ‘dissertare’, meaning to continue to discuss and the Latin word ‘disserere’ which means to examine and discuss .

The word ‘thesis’ originally comes from the Greek word ‘tithenai’, which means to place or position. This later evolved into the Latin ‘thesis’, which had two meanings: an abstract question and to put something forward .

Similarities between a dissertation vs thesis

Although there are some key differences between a dissertation and a thesis, there are also similarities.

• Both are generally long pieces of academic writing, much longer than a typical essay.
• Both explore a topic in depth, whether you are conducting totally unique research or structuring an argument based on existing research.
• Both are considered a final project and usually required to graduate from a degree, masters or PhD. Students can graduate without a thesis or dissertation if they choose to complete a postgraduate diploma or postgraduate certificate instead.
• Excellent academic writing skills are highly important for both types of research project.

Is a dissertation harder than a thesis?

Though, the difficulty of a thesis or dissertation depends on your personal skill set. For instance, students that learn better by developing their own research ideas may find a dissertation easier than a thesis.

Difficulty can also depend on the level of the course. For instance, a thesis completed at doctorate level is likely to require more advanced knowledge than a thesis at undergraduate level.

The difficulty of either type of research project can also vary depending on the subject matter and the resources available to you.

Both dissertations and theses can be challenging, but don’t be put off by the thought of having to produce a larger body of work. Your supervisor will be there to support you.

Definitions depend on where you are

The terms ‘dissertation’ and ‘thesis’ are sometimes used interchangeably, and the meanings can differ depending on the country and university.

There are plenty of differences between the variant forms of English, such as British English and American English. Around the world, different English-speaking countries use the words ‘dissertation’ and ‘thesis’ differently. 

Generally, nations with British-based academic systems of university education use dissertation to refer to the body of work at the end of an undergraduate or masters level degree . British-based institutions generally use thesis to refer to the body of work produced at the end of a PhD . 

In countries and institutions that are based on the American system of education, the words tend to be used in reverse. However, institutions and even different departments in the same university can use the words differently. 

If you're in doubt, then stick with the way the university and department you're currently attending use the terms. 

Definitions can depend on the subject

In the UK, the terms ‘dissertation’ and ‘thesis’ are generally applied equally across institutions and subjects. 

However, in the US the meanings can differ between different subject areas. The term ‘thesis’ can be used to describe a piece of original research in US academia, whereas original research is usually referred to as a dissertation in the UK. 

If you’re studying in the US , you may complete a thesis at masters level in another subject area that involves wide-ranging reading and understanding rather than original research and still call it a thesis.

With so much interchangeability between the two terms, it’s understandable that there is often confusion in the debate between a dissertation vs thesis, as there is no clear answer. 

Always read specific course details to understand exactly what’s involved in the research project that you are required to produce.

Examples from US and UK universities

Georgetown University in the US refers to a dissertation and a thesis as both adding to your 'field of knowledge' . The University of Edinburgh recommends that you refer to your individual course handbook for guides to dissertations, so each department will have their own guidelines to using the word dissertation and thesis. At University College London they refer to a thesis as the piece of work at the end of an EngD, MPhil, MD(Res) or PhD, which are all research degrees. 

In conclusion

Ultimately, it doesn't really matter which word you use as both refer to a serious and lengthy piece of work where you can show what you have researched and understood as part of your postgraduate studies.

As long as you are referring to the piece of work that you are compiling in the same way as those in your department then you will avoid confusion.

It is important to check whether the research piece involves original research or expects you to build upon existing research.

Writing a dissertation or a thesis requires a substantial amount of planning and work and you don't want to let yourself down at the last hurdle with poor presentation of your work, so always keep an eye on your course or department guidelines.

Related articles

Top Tips On Writing Your Postgraduate Dissertation Or Thesis

How To Write A Thesis

Writing A Dissertation Proposal

Top Thesis Writing Tools

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Research Effectively: Tips on How to Review Related Literature

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Professors across various disciplines require their students to write literature reviews. This article provides pertinent information on how to review related literature effectively.

Updated on December 1, 2021

Professors across various disciplines require their students to write literature reviews, which are collections of authoritative sources on particular topics. They are an essential part of research, because it provides a handy guide to more information on their subjects.

This article provides pertinent information on how to review related literature effectively. By learning these techniques, you may improve your teaching skills and become more effective at grant writing.

Before you start writing, keep in mind that you may need a good management cloud service to store all your files when reviewing your related literature. And once you're done writing your research paper, you may want to promote it using different SEO strategies .

Tips on How to Review Related Literature Effectively

Evaluate the resources.

Make sure to constantly evaluate the sources that your students have incorporated into their literature review. Also, verify whether the resources contain valuable and pertinent information regarding their chosen topic.

Evaluating the resources is particularly vital when an academic library does not collect the sources your students have retrieved.

Web resources may be easily accessible. However, students and professors alike must be more careful to ensure that the sources gathered are reliable.

Below are five essential criteria to help you evaluate information from any resource:

Evaluation Criteria

1. accuracy.

The information from the sources your students gathered must be error-free to ensure its reliability. Furthermore, the details must be based on proven facts. To help you check whether the information is factual or not, you may need to verify it against other authoritative sources.

2. Authority

Check the authors' backgrounds. Authors of scholarly journals must have the qualifications to write on a specific topic. In addition, they must be affiliated with an established organization or a reputable university in the subject field.

3. Objectivity

Carefully examine the intended purpose of the information. It must be based on facts and not merely opinions. Thus, the details in the study must be impartial.

4. Currency

It's also necessary to check the currency of the sources. Are the pieces of information still current, or are they outdated? A good rule of thumb is to utilize sources published in the past ten years for research papers in the humanities, history, arts, and literature.

For fast-paced fields like the sciences, resources published in the past two to three years are a good benchmark since they are more current. Thus, they reflect the newest discoveries, best practices, theories, and processes.

5. Coverage

Make sure to verify whether you or your students' resources have met your information needs. After reading their output, ask yourself if the material they used gave in-depth coverage or just basic information.

Know the Ideal Types of Periodicals for Literature Reviews

Scholarly journals.

A literature review is composed of various scholarly works. Aside from theses and dissertations, academic journals are essential resources that your students can incorporate in their literature reviews.

The authors of scholarly journals are scholars, researchers, and subject experts. The findings in the academic paper are based on in-depth analysis and stated methodology.

Most of the time, the authors use discipline-specific terminology and jargon that may be difficult to comprehend.

Scholarly journals also have references cited in footnotes or bibliographies. The frequency of their publication may be quarterly, monthly, or annually. Some advertise, but many do not.

Trade Magazines

Trade magazines are authored by paid staff with subject expertise and are members of a particular industry.

Their content is about trends, current news, products, and developments in specific fields. Like scholarly journals, authors of trade magazines also use industry-specific jargon. However, peer reviewers don't assess the quality of trade magazines. In addition, these periodicals also have several advertisements that are usually industry related.

Trade magazines may have valuable information. Still, it's best to use scholarly journals in literature reviews. With academic journals, you can be surer of the quality of the paper since they're peer-reviewed.

Popular Magazines and Newspapers

These are non-authoritative sources. Paid staff, who are often non-experts, write these types of periodicals. They're composed heavily of advertisements and are published daily, weekly, or monthly. These could be useful in literature reviews, but also keep in mind that they may be viewed as less credible, because they're often written by non-experts. [Ed1]

Evaluate Different Websites

The internet is a vast network of unfiltered sources, which means anyone can put anything in it, bypassing any form of editorial or peer review. Therefore, it is of utmost importance that you evaluate the web sources you and your students use before including them in your scholarly publication.

Always look for the authors' information. Check the links that read “About this site” and “Who we are.” In addition, verify whether the webmaster provides contact information so that you can contact them with inquiries.

Lastly, look for hints on authority in the internet address (URL).

• .com is a commercial site
• .gov is a government agency or department
• .net is a network provider
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Writing a literature review aims to convey what knowledge has been established on a particular topic, as well as the strengths and weaknesses[Ed2] of the information out there among the resources.

Knowing the essential information on how to review related literature is beneficial to you and your students.

Being aware of these techniques may help you alleviate your students' anxiety about literature reviews and solidify your status as an excellent teacher.

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The Importance of Literature Reviews in Dissertations

1. Introduction to Literature Reviews in Dissertations

A literature review is a fundamental component of a dissertation. It enables the researcher to survey existing research related to their chosen topic and outline the principles of that particular field from which further investigation can be based. Literature reviews should include an analysis, synthesis, summarization and interpretation of current knowledge on the subject being studied.

• Analysis : A critical appraisal or examination of another scholar’s work in order to evaluate its relevance for your own study needs.
• Synthesis : Combining multiple viewpoints into one cohesive narrative while considering what may be missing from the various sources.

The purpose of analyzing the relevant literature is twofold: firstly, it allows you to create your own original argument by understanding how previous researchers have contributed to this specific area; secondly, it helps you identify any shortcomings or gaps in existing studies – areas where new knowledge could potentially be created through further research. As such, writing a thorough and accurate literature review is essential for producing good quality dissertations.

2. Examining the Significance of Literature Reviews

Exploring the Purpose of Literature Reviews A literature review is an analysis and evaluation of existing research findings on a topic. It serves several purposes in research-oriented writing, including providing context for related work, summarizing prior studies to form a basis for new research and synthesizing results from multiple sources into one unified interpretation. Writing a thorough and comprehensive literature review takes effort but ultimately aids researchers in deepening their understanding of the subject matter.

Organizing Existing Knowledge: The main purpose of conducting a literature review is to bring order out chaos within already existing knowledge or information on the chosen topic. By doing this task methodically and conscientiously, it becomes easier to spot areas that need more attention or where further investigation might be necessary while also avoiding errors by not overlooking important works all too common when performing ad hoc searches. Additionally, since most reviews focus on synthesis rather than quantitative aggregation across numerous detailed reports, they provide insight into trends over time as well as what future directions should entail such as upcoming technologies and changes in best practices.

• Researched information must be effectively organized.
• “Gaps” can easily be identified.

3. Benefits and Challenges of Conducting a Literature Review

The literature review process has multiple advantages and challenges in the research realm. This section provides a reflection on some of those benefits and issues.

• Develops an overview of current scholarly knowledge; identifies relationships among different fields and topics, potential gaps in knowledge, emerging trends or controversies.

4. Best Practices for Formulating an Effective Literary Review Structure

When formulating an effective literary review structure, it is important to have a clear plan in mind. First and foremost, summarise the key texts that you will be engaging with; this serves as a starting point for writing your review. It is helpful to adhere to certain best practices when establishing a structured approach.

• Focus on relevant works: Narrow down the list of literature by selecting those materials directly related to your study’s research questions or objectives.
• Develop distinct sections: Divide up different strands of inquiry into separate subsections so that each discussion may stand alone in its own right without losing coherence within the broader argument.
• Be critical in assessments: Evaluate strengths and weaknesses from both primary sources as well as past studies which seek out ways they can inform additional scholarship going forward.

5. Strategies for Locating Relevant Sources for Your Literary Review

Identifying Relevant Sources

The first step of conducting an effective literature review is to identify sources that are highly relevant to the research topic. This can be done through a variety of strategies, such as:

• Exploring bibliographies provided in existing articles.
• Researching potential authors and their research topics via databases or search engines.

These two methods can often lead you to further related studies and additional authors who have conducted work on the same topic. For example, exploring a study’s reference page may direct you to similar works written by different authors which provide complementary information.

Verifying Source Reliability

Once some sources have been identified for use, another important step is verifying whether these are reliable sources for your particular project. It is essential when researching academic fields that all materials used have undergone rigorous peer-review processes and meet certain academic standards; this helps maintain trustworthiness in all areas of academia. In addition, it’s also important to consider how current any source material might be – timeliness matters depending on the field being researched! Some considerations while evaluating reliability include asking questions such as:

6. Acknowledging Sources within your literary review

When writing a literature review, it is important to remember and give due credit to all sources that you have used in the compilation of your work. It is especially crucial when you are citing published material by other authors as these documents are protected under copyright law. Therefore, one must be sure to include proper acknowledgement of every source utilized.

• Inclusion of accurate referencing not only protects against infringement but also adds credibility and authority to your review.
• Be mindful that some publications may require specific formatting for citations; therefore familiarize yourself with them before beginning the project or refer back if any doubt arises

The use of Citations:

A citation provides information regarding the source so readers can easily identify it within their library collection or online database search results. To cite a particular author’s publication accurately , follow this correct format : Name ( date) , title , place where it was published . For instance : Smith (1984), “A Study on Literary Themes,” New York: Penguin Books

7. Concluding Remarks on the Importance of Completing a Thorough Literature Review

In conclusion, completing a thorough literature review is of paramount importance to any research endeavor. The primary aim of this type of review is to assess the existing studies related to the topic in order gain an understanding and identify knowledge gaps. As such, it provides new researchers with valuable insights including:

• Contextual information on how current theories are built.
• A better understanding of key terms and concepts.
• An assessment for potential methodological approaches.

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Thesis Literature Review: The Complete Guide

When writing the literature review thesis section of their papers, many students don’t know where to start. The term literature means a collection of materials or information on a specific topic or research area. This collection can include journal articles and books of academic value. But when writing a thesis or dissertation, your literature review doesn’t have to include every book or article that other scholars and experts have written on your study topic.

That’s because this section of your paper can be too broad. Consequently, the literature review section should include key sources that relate to the main debates, gaps, and trends in your research area.

On the other hand, the term review means the ability to identify: 

• What other authors or experts have discredited, established, and accepted in your study field
• Areas of conflict or controversy among various schools of thought
• How your study builds upon, extends, and departs from the previous studies

Reviewing the available literature, therefore, entails more than summarizing relevant sources. It involves evaluating every source and synthesizing the sources to gain a broader view of your study field. At the field level, literature review entails discussing emerging and common approaches, notable trends and patterns, controversial areas or conflicts, and gaps in the available, relevant literature.

What is Thesis Literature Review?

In a thesis, the literature review section provides a summary, evaluation, and description of every source. A thesis literature review refers to the overview of the major sources, like writing in your topic. This review can cover sources like scholarly books, journal articles, websites, and government reports. Dissertation or thesis authors present this review as a separate section.

Essentially, this section identifies, syntheses, and evaluates relevant literature in a specific study field. It also tells the readers how knowledge in the research area has changed while highlighting what other researchers have done. It also illuminates what scholars in the field generally accept, the current thinking on your topic, and what’s emerging.

Additionally, research-based texts like doctoral theses can have a literature review section that identifies research gaps. In that case, a thesis literature review highlights the under-researched or unexplored areas of the topic. It also articulates the way the research project can address the gaps. The primary purpose of a literature review is to give readers a current, critical account of the research state on the chosen topic.

Here’s what a literature review should do: 

• Identify areas of past scholarship.
• Describe how each source relates to the others selected by the author.
• Identify new methods of interpreting and shedding light on the existing gaps in the available research.
• Place every source within the context based on its contribution to the overall understanding of a specific theory, research area, or issue.
• Suggest the way forward for future studies.

Essentially, the literature review section is a survey of the scholarly sources on the selected topic. It critically analyzes relevant publications while explaining the findings of the author.

How to Write a Literature Review for Thesis

Writing a literature review is an essential skill that every student intending to pursue higher education should learn. That’s because most professors and educators require learners to write research papers at some point. Therefore, acquiring this skill is essential before pursuing a research career or applying for graduate school. Here are the steps to follow when writing a thesis literature review.

Find relevant literature 

The first step in the process of writing a thesis or dissertation is to define a topic. That way, you can find suitable material or literature based on your research questions and problem. But if your assignment is to write this section alone, select a focus and then develop your central question. That way, directing your research will be easier. Essentially, writing a literature review section doesn’t require you to collect original data in the field. Instead, find relevant, existing publications on which to base your research.

Select and evaluate sources 

Reading everything that other scholars and experts have written in the available sources won’t be possible. Therefore, evaluate the most relevant and useful sources for answering your research question. For instance, ask about the problem or question that the author addresses in a source. Also, understand the concept the author is defending, the models, methods, and theories they use to do so. Additionally, study the conclusions or results of previous studies, their strengths, weaknesses, and contributions to your study topic.

Explore major theories and landmark studies in your research area. However, use credible sources only. Your literature review should depend on your discipline and topic. While reading the sources, take notes to help you cite sources after writing your thesis.

Identify debates, themes, and gaps 

Before organizing the literature review structure and argument, understand the relationships and connections between different sources. Here’s what you should look for depending on your notes and reading:

Patterns and trends: How do some approaches become less or more popular over time? Debates, contradictions, and conflicts: How do the available sources disagree? Themes: What concepts or questions recur in the available literature? Pivotal publications: Have some influential studies or theories changed their direction? Gaps: Have you noticed something missing in the available literature?

Such analysis will enable you to determine the most effective way to structure your literature review. It will also enable you to come up with work that will contribute to the existing knowledge.

Outline the Literature Review 

Once you’ve decided on how to structure a literature review, you can now create an outline. You have several ways of organizing your literature review’s body. Depending on how long you want this section of the paper to be, you can include several strategies. For instance, the overall structure could be thematic while you discuss every theme chronologically. You can also use different research methods or theories, depending on what you want to include in your literature review.

Write the literature review 

Like other academic papers, a literature review includes an introduction, the body section, and the conclusion. The content of each of these sections depends on the literature review’s objective. For instance, the introduction should establish the purpose and focus on your literature review. Depending on your literature review’s length, the body can have several subsections. For instance, you can have a subheading for every theme, methodological approach, or period. The conclusion should summarize your key findings based on the available literature. You can also emphasize the significance of the findings in the conclusion.

How to Write a Literature Review Outline

Your literature review should have a structure that compares to that of any other academic paper. Here’s how you can outline your literature review:

Introduction: Start by defining the research topic while providing the literature review context. Also, establish reasons for reviewing the available literature while explaining your organization. Additionally, tell readers about the scope of your review. Body: In the body, organize your review based on methodology, themes, or period. You can also adopt a wider or general view of the available literature. Conclusion: In the conclusion, summarize the essential aspects of the available literature. Also, evaluate the state of the available literature, while identifying significant gaps or flaws in the existing knowledge. You can also outline future study areas while linking to the current knowledge.

Your literature review should have these three sections, regardless of their scope or length.

Types of Literature Review

There are many types of literature reviews from which students can choose when writing theses or dissertations. Here are the most popular literature review types.

Narrative Literature Review  In this review, the author summarizes and critiques the literature body. Also, this review concludes the research topic while identifying inconsistencies or gaps in the available knowledge body. Conducting a narrative literature review requires a focused research problem or question. Systematic Literature Review This literature requires a well-defined and rigorous approach when compared to the others. That’s because it uses a detailed and comprehensive timeframe during which the author selects the literature to review. Experts divide systematic literature reviews into meta-synthesis and meta-analysis. Argumentative Literature Review  This approach involves a selective examination of the literature. The goal is to refute or support an argument, a philosophical problem, or a deeply embedded assumption. Integrative Literature Review  With this approach, the author synthesizes and critiques secondary data regarding a research topic by taking an integrated approach. And this leads to the generation of new perspectives and frameworks on the study topic. This review is the only option when a study doesn’t involve primary data collection and analysis. Theoretical Literature Review  As the name suggests, this approach focuses on theories on a concept, issue, or phenomena. This review plays a crucial role in establishing the existing theories and their relationships. It also helps in determining the degree of their investigation and testing of new hypotheses.

Simple Structure of a Literature Review

Many students know what a literature review should be about but they have difficulties structuring it. Well, outlining a literature review requires you to include an introduction, the body, and the conclusion of this section. However, your thesis literature review should incorporate certain components. These are as follows:

The objective of your literature review An overview of your study subject Categorization of the selected sources into the ones supporting your position, those opposing it, and those presenting different arguments. Discussion of each source’s distinctiveness and similarities with others.

Structuring your literature review requires you to analyze each source or the relevant part of it critically. That way, you can understand the expertise of the author in your study field. You can also understand the argument of the author and the empirical evidence that supports it. What’s more, you can determine whether the author’s perspective is biased in a certain direction.

Tips for Writing Thesis Literature Review

Overall, the structure and content of your literature review will depend on academic conventions in your academic field and your research area. However, you can follow these tips to write a strong literature review.

• Go beyond describing others’ opinions: Your literature review should do more than describing other writers’ opinions. Instead, it should present a critical analysis of other scholars. Your readers should understand what other writers might have missed in their work.
• Use different techniques to structure your review: Use key debates, controversial issues, methodology, and thematic areas to structure your literature review. That way, you can make the review dynamic and coherent.
• Be selective: You don’t have to review every book or article in your study area. Instead, select only the essential pieces and show how they relate to your current study. You will find a wide range of sources with information that you can include in your paper. However, select pieces that your audience will find relevant for your study topic.
• Express your voice: The literature review’s primary objective is to provide a summary and critical analysis of the other authors’ viewpoints. However, critical analysis means you can express your opinion based on the available literature.
• Don’t overuse direct quotations: Use direct quotes only when you want to emphasize specific points. Instead of heavily relying on a single author’s work, highlight its importance in research and then proceed. Rather than summarizing the work of another author, tell your readers why yours disagrees or agrees with theirs. Thus, your review should be critical.
• Use evidence: Providing evidence in a literature review forms the essence of a literature review. Ideally, your review should refer to different sources to make a point. Therefore, back your research interpretations and arguments with evidence. Thus, your literature review should not feature baseless claims because it’s not an opinion.

Final Thoughts

A thesis literature review should highlight the overarching themes while showing that you understand the bigger picture. It should also explain your observations with sufficient supporting evidence. What’s more, you should consider the scale, scope, and design of the existing methods and trends, while critiquing and reviewing them. If some findings are impossible or difficult to compare, your review should also point this out.

Frequently Asked Questions

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Thesis and Dissertation Guide

• Starting your Dissertation/Thesis
• Dissertation/Thesis Resources
• Books That May Help
• Literature Reviews
• Annotated Bibliography
• We Don't Have It? / Interlibrary Loan
• Online Learning Study Tips
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• Advanced Search Techniques
• Kemp Library Video Tutorials
• Find Articles / Journals / Databases
• What are...
• Database Video Tutorials
• Peer Reviewed
• How to confirm and cite peer review
• Primary/Secondary Sources
• Other Types of Sources (i.e. Newspapers)
• Legal Research Resources
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• Google Scholar
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Everything You Need To Know

• What is Peer Reviewed?
• Characteristics of Peer Review
• Finding Peer Review
• Making sure it's peer reviewed
• What is Popular?
• What are Trade Publications?

Very simply an article is peer reviewed if it has been read and scrutinized by scholars or other researchers in the field prior to publication. Think of it as quality control for research and publication.

The article and the journal where it is published also meet certain research and publishing standards for that particular discipline.

Other terms for  peer reviewed  are  refereed  or  juried .

Official Definitions:

The Oxford English Dictionary (2019) defines peer review as "To subject to, or evaluate by, peer review; to referee (a paper)" and peer reviewed as "That is, or has been, subject to peer review; (of a journal) that incorporates a system of peer review."

Bibliography

"peer review, v."  OED Online , Oxford University Press, September 2019, www.oed.com/view/Entry/237423. Accessed 29 October 2019.

"peer-reviewed, adj."  OED Online , Oxford University Press, September 2019, www.oed.com/view/Entry/263622. Accessed 29 October 2019.

Here are some general characteristics that usually apply to peer reviewed journals and their articles:

• Introduction & literature review
• Theory or background
• Methods (how I did my research)
• Conclusion and/or discussion
• Tone or language of the article will reflect the subject discipline for which it is written. It assumes some scholarly background on the part of the reader
• Most scholarly articles report on original research or experimentation
• May be accompanied by supporting charts and diagrams, but there may be few pictures
• Journal will have little or no advertisement

Is it peer reviewed? How do you know? We have a few ways to sort your results, or identify if your specific result is peer reviewed .

1. Sort your results: Most of our databases have a feature that allows you to limit or refine your search results to only those that are peer-reviewed. Look for that option on the search screen.  Pro tip: some database providers have a more lenient definition of peer reviewed , if you're not sure check with a librarian or your professor.

2. I'm not sure if this article or journal is peer reviewed :

You can look up the journal by title or ISSN number in Ulrich’s Periodicals Directory. Once you locate the journal, Ulrich's will tell you, by having an image of a referee shirt or not,  if a journal is peer reviewed or not.   Below, you can see that of the six results, the first and fifth result are not peer reviewed and the second, third, fourth, and sixth are peer reviewed.

• If you want to see if a particular journal is peer reviewed, go to  Ulrich's Periodical Directory  (you can get there from the Database A to Z list as well).  
• Do a search by Journal Title (here we used "Journal of Anthropology") to see if a journal is peer reviewed.  There will be an image of a referee jersey next to the title if it is peer reviewed. 
• In the below example, the search for "Journal of Anthropology"  UNLV  is not a peer reviewed journal, but  The Australian Journal of Anthropology  is (both electronic and print).

Popular magazines are those that are published with the general reader in mind. The articles generally assume no prior knowledge on the part of the reader and are written by journalists or editors. The goal may be to inform, entertain or persuade the reader.

Popular Magazines may have lots of pictures and they will have advertisements.

Some examples:

• Consumer Reports
• Mademoiselle
• Runners World
• Sports Illustrated

Trade publications are often written by and for professionals within a field or industry. The publication may cover emerging trends, current news and new products. The articles may be "how to" in nature or give practical advise for practitioners in a field. They are usually not academic in nature and are not peer reviewed . The publication will often contain advertisements and photos.   They can look academic, so be sure to review sources carefully.

What is Peer Review? Visual

The Process of Peer Review

Scholarly (and Peer Reviewed) VS Popular

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Is referencing another PhD dissertation or Master's thesis a reasonable practice in a Master's thesis?

Not much literature can be found on what I'm working on and it's all by the people I work with. Am I able to reference their work/text in my thesis or I should just stick to referencing material published in journals and conferences, however remote they might be and just get away with whatever's not published and not back them up?

• research-process

• Also see this question Can you cite other master's theses when writing your own? –  gman Commented May 22, 2015 at 10:21
• 3 Why would you think it wouldn't be okay? If the information is available there, why not use it? –  curiousdannii Commented May 22, 2015 at 13:52
• 3 If you use someone's previous work, you must cite it. No exceptions. It is completely irrelevant whether that previous work appears in a journal, conference proceedings, PhD dissertation, technical report, arXiv preprint, working paper, lecture notes, newspaper article, TED talk, StackExchange comment, or cocktail napkin. –  JeffE Commented May 22, 2015 at 14:42
• 1 I cited three PhD dissertations and two Masters dissertations as part of my Masters dissertation. Reference it like you'd reference any other publication. In fact, I also cited a lecturer's powerpoint slides. Actually, now that I think about it, I cited my own previous work at one point too. Every source is valid so long as you reference it. That's not to say that every source necessarily carries weight, of course. You have to evaluate the source. But from a citation point of view, it's all good. –  Jonathon Cowley-Thom Commented May 22, 2015 at 15:01

5 Answers 5

Yes, you are able to reference their work in your text, as long as you make clear in the bibliography what type of document (master thesis, PhD thesis, Institution) it is.

However, i would not consider it to be ideal if your work critically depends on such references in the sense that a central assumption or starting point in your thesis breaks down if the reference provides false or incomplete results. Particularly in the case of master theses / dissertations it is not generally clear whether and to which extent they are peer-reviewed and what their overall trustworthiness is. With (accepted!) PhD theses things are better, as these normally go through a review process. Furthermore, for PhD theses i would expect that their main points have been published somewhere (conference or journal) and then you clearly should prefer these publications.

• 3 +1. I have cited MSc theses in journal papers and that was not a problem either. As you say it was not something the paper critically depended on ; in my case it was to raise a point in the Discussion section. –  user8458 Commented May 22, 2015 at 6:30
• 6 There's a reasonable argument to be made that it's unwise to depend critically on anything you can't verify - including things in peer-reviewed papers, which have been known to be wrong. Ultimately, peer review is just as much a human activity as anything else, and is prone to error - the best that can be said of a peer-reviewed paper is that it has been checked by somebody of unknown experience for an unknown amount of time. In many cases, people put a lot of effort into peer review, but that's not always the case, and even when it is, errors creep in. You're well-advised to check yourself. –  Stuart Golodetz Commented May 22, 2015 at 8:12

This is really an addendum to the two previous answers, but nevertheless it is still answer-worthy IMO .

It is mostly true that with PhD theses, the crux of the stuff is generally published in journals etc. so that those count as more reliable sources (I dare say primary sources). However, it is not necessarily true that this will always be so. For instance, I am aware that at least in Theoretical Physics, University of Bielefeld is an example of an institution where it is not mandatory to have the stuff written in the thesis published. Theses are judged for what they contain and whether or not that represents an original contribution to the subject. I am using this only as an example, the general statement is - it is possible for a PhD thesis to contain original stuff which is otherwise unpublished. And at any rate, it is possible to have stuff written more elaborately than in the published papers (mine is an example). (Occasionally, this might also be because some letters journals have stringent limits on word counts and/or pages, so people shrink stuff there and feed out many more details in the thesis).

Thus, there is no harm in citing a PhD thesis, provided you mention that it is what it is.

• 1 "not mandatory to have the stuff written in the thesis published" - in particular, all the stuff. In fact, at my university it is mandatory to publish some parts of your research before writing your doctoral thesis, but at the same time, it is also mandatory that the doctoral thesis contains more than just the sum of all previous publications. –  O. R. Mapper Commented May 22, 2015 at 8:03

If others have completed theses or dissertations related to the topic you are studying, I would definitely cite them. While writing my MA thesis, there were very few peer-reviewed publications available in the particular region I was working in but there were a number of recently completed theses and dissertations. Some of these were excellent and provided great data to support my own arguments, while others were of lower quality and were not cited. As long as you're critical of the content and argument of these documents you should be fine.

As with most referencing questions, you have to consider what you're depending on them for. If it's a matter of "further details on the previous experiment", a thesis is likely to go into much more depth than a paper and is the best you're likely to get. If it's "so-and-so proved that..." you should really be looking for something peer-reviewed. Most cases will fall in between, and then you need to use your judgement and be clear what you're citing.

you shouldn't quote a master's Thesis because they are typically not published. only published work should be cited in a research work. If it hasn't been published no one is responsible for the Content

• And if they are published? Your whole argument builds on this (false IMHO) assumption. –  Mayou36 Commented Jul 2, 2019 at 7:06

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Reference Examples

More than 100 reference examples and their corresponding in-text citations are presented in the seventh edition Publication Manual . Examples of the most common works that writers cite are provided on this page; additional examples are available in the Publication Manual .

To find the reference example you need, first select a category (e.g., periodicals) and then choose the appropriate type of work (e.g., journal article ) and follow the relevant example.

When selecting a category, use the webpages and websites category only when a work does not fit better within another category. For example, a report from a government website would use the reports category, whereas a page on a government website that is not a report or other work would use the webpages and websites category.

Also note that print and electronic references are largely the same. For example, to cite both print books and ebooks, use the books and reference works category and then choose the appropriate type of work (i.e., book ) and follow the relevant example (e.g., whole authored book ).

Examples on these pages illustrate the details of reference formats. We make every attempt to show examples that are in keeping with APA Style’s guiding principles of inclusivity and bias-free language. These examples are presented out of context only to demonstrate formatting issues (e.g., which elements to italicize, where punctuation is needed, placement of parentheses). References, including these examples, are not inherently endorsements for the ideas or content of the works themselves. An author may cite a work to support a statement or an idea, to critique that work, or for many other reasons. For more examples, see our sample papers .

Reference examples are covered in the seventh edition APA Style manuals in the Publication Manual Chapter 10 and the Concise Guide Chapter 10

Related handouts

• Common Reference Examples Guide (PDF, 147KB)
• Reference Quick Guide (PDF, 225KB)

Textual Works

Textual works are covered in Sections 10.1–10.8 of the Publication Manual . The most common categories and examples are presented here. For the reviews of other works category, see Section 10.7.

• Journal Article References
• Magazine Article References
• Newspaper Article References
• Blog Post and Blog Comment References
• UpToDate Article References
• Book/Ebook References
• Diagnostic Manual References
• Children’s Book or Other Illustrated Book References
• Classroom Course Pack Material References
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• Chapter in an Edited Book/Ebook References
• Dictionary Entry References
• Wikipedia Entry References
• Report by a Government Agency References
• Report with Individual Authors References
• Brochure References
• Ethics Code References
• Fact Sheet References
• ISO Standard References
• Press Release References
• White Paper References
• Conference Presentation References
• Conference Proceeding References
• Published Dissertation or Thesis References
• Unpublished Dissertation or Thesis References
• ERIC Database References
• Preprint Article References

Data and Assessments

Data sets are covered in Section 10.9 of the Publication Manual . For the software and tests categories, see Sections 10.10 and 10.11.

• Data Set References
• Toolbox References

Audiovisual Media

Audiovisual media are covered in Sections 10.12–10.14 of the Publication Manual . The most common examples are presented together here. In the manual, these examples and more are separated into categories for audiovisual, audio, and visual media.

• Artwork References
• Clip Art or Stock Image References
• Film and Television References
• Musical Score References
• Online Course or MOOC References
• Podcast References
• PowerPoint Slide or Lecture Note References
• Radio Broadcast References
• TED Talk References
• Transcript of an Audiovisual Work References
• YouTube Video References

Online Media

Online media are covered in Sections 10.15 and 10.16 of the Publication Manual . Please note that blog posts are part of the periodicals category.

• Facebook References
• Instagram References
• LinkedIn References
• Online Forum (e.g., Reddit) References
• TikTok References
• X References
• Webpage on a Website References
• Clinical Practice References
• Open Educational Resource References
• Whole Website References

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