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Annotated Bibliographies
Author: ADMIN (ukstudent at gmail dot com)
Published: Wed, 27-Dec-2006
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Annotated Bibliographies. Article by The Writing Center, University of North Carolina at Chapel Hill

What this handout is about...

This handout will:
1. explain why annotated bibliographies are useful for researchers.
2. provide an explanation of what constitutes an annotation.
3. describe various types of annotations and styles for writing them.
4. offer multiple examples of annotated bibliographies in the MLA, APA, and CBE styles of citation.


Welcome to the wonderful world of annotated bibliographies! You're probably already familiar with the need to provide bibliographies, reference pages, and works cited to credit your sources when you do a research paper. An annotated bibliography includes descriptions and explanations of your listed sources beyond the basic citation information you usually provide.

Annotated bibliographies are useful for researchers:

Why Do These Things, Anyway? You Can See What the Source Is From the Regular Bibliography.

One of the reasons behind citing sources and compiling a general bibliography is so that you can prove you have done some valid research to back up your argument and claims. Readers can refer to a citation in your bibliography and then go look up the material themselves. When inspired by your text or your argument, interested researchers can access your resources. They may wish to double check a claim or interpretation you've made, or they may simply wish to continue researching according to their interests. But think about it: even though a bibliography provides a list of research sources of all types that includes publishing information, how much does that really tell a researcher or reader about the sources themselves?

An annotated bibliography provides specific information about each source you have used. As a researcher, you have become an expert on your topic and have the ability both to explain the content and to assess the usefulness of your sources for those not in the know. Think of your paper as part of a conversation with others interested in the same things you are; the annotated bibliography allows you to tell readers what to check out, what might be worth checking out in some situations, and what might not be worth spending the time. It's kind of like providing a list of good movies for your classmates to watch and then going over the list with them, telling them why this movie would be better than that one or why one student in your class might like a particular movie better than another student. You want to give your audience enough information to understand basically what the movies are about and to make an informed decision about where to spend their money based on their interests.

Good Reasons That Annotated Bibiliographies Exist:

A good annotated bibliography
encourages you to think critically about the content of the works you are using, their place within a field of study, and their relation to your own research and ideas.
proves you have read and understand your sources.
establishes your work as a valid source and you as a competent researcher.
orients your study and topic in a continuing professional conversation.
provides a way for others to decide whether the source will be helpful to their research if they read it.
could help interested researchers determine whether they are interested in a topic by providing background information and an idea of the kind of work going on in a field.

What is an annotated bibliography?

What are the Basic Possible Elements of an Annotation?

1. Bibliography according to the appropriate citation style (MLA, APA, CBE).
2. Explanation of main points and/or purpose of the work, basically its thesis, which shows among other things that you have read and thoroughly understand the source.
3. Verification or critique of the authority or qualifications of the author.
4. Comments on the worth, effectiveness, and usefulness of the work in terms of both the topic being researched and/or your own research project.
5. The point of view or perspective from which the work was written. For instance, you may note if the author seemed to have particular biases or was trying to reach a particular audience.
6. Relevant links to other work done in the area, like related sources, possibly including a comparison with some of those already on your list. You may want to establish connections to other aspects of the same argument or opposing views.

The first four elements above are usually a necessary part of the annotated bibliography. Points 5 and 6 may involve a little more analysis of the source, but you may include them in other kinds of annotations besides evaluative ones. Depending on the type of annotation you use, which this handout will address in the next section, there may be additional kinds of information that you will need to include.

For more extensive research papers (probably ten pages or more), you often see resource materials grouped into sub headed sections based on content, but this probably will not be necessary for the kinds of assignments you'll be working on. For longer papers, ask your professor about her preferences concerning annotated bibliographies.

Did you know that annotations have categories and styles?

Decisions, Decisions:

As you go through this handout, you'll see that, before you start, you'll need to make several decisions about your annotations: citation format, type of annotation, and writing style for the annotation.

First of all, you'll need to decide which kind of citation format is appropriate to the paper and its sources, for instance, MLA or APA. This may influence the format of the annotations and bibliography. For your purposes, all bibliographies should be double-spaced and use normal margins (you may want to check with your instructor, since she may have a variation she wants you to follow).

MLA (Modern Language Association)

Check out our handout on MLA documentation for basic MLA bibliography formatting and rules.

MLA documentation is generally used for disciplines in the humanities, such as English, languages, film, and cultural studies or other theoretical studies. These annotations are often summary or analytical annotations.
Title your annotated bibliography "Annotated Bibliography" or "Annotated List of Works Cited."
Following MLA format, use a hanging indent for your bibliographic information. This means the first line is not indented and all the other lines are indented four spaces (you may ask your instructor if it's okay to tab over instead of using four spaces).
Begin your annotation immediately after the bibliographic information of the source ends; don't skip a line down unless you have been told to do so by your instructor.

APA (American Psychological Association)

Check out our handout on APA documentation basic APA bibliography formatting and rules.

Natural and social sciences, such as psychology, nursing, sociology, and social work use APA documentation. It is also used in economics, business, and criminology. These annotations are often succinct summaries.
Annotated bibliographies for APA format do not require a special title. Use the usual "References" designation.
Like MLA, APA uses a hanging indent: the first line is set flush with the left margin, and all other lines are indented four spaces (you may ask your instructor if it's okay to tab over instead of using four spaces).
After the bibliographic citation, drop down to the next line to begin the annotation, but don't skip an extra line.
The entire annotation is indented an additional two spaces, so that means each of its lines will be six spaces from the margin (if your instructor has said that it's okay to tab over instead of using the four spaces rule, indent the annotation two more spaces in from that point).

CBE (Council of Biology Editors)

Check out our handout on CBE documentation for basic CBE bibliography formatting and rules.

CBE documentation is used by the plant sciences, zoology, microbiology, and the medical sciences.
Annotated bibliographies for CBE format do not require a special title. Use the usual "References," "Cited References," or "Literature Cited," and set it flush with the left margin.
Bibliographies for CBE in general are in a slightly smaller font than the rest of the paper.
When using the name-year system, like MLA and APA, the first line of each entry is set flush with the left margin, and all subsequent lines, including the annotation, are indented three or four spaces.
When using the citation-sequence method, each entry begins two spaces after the number, and every line, including the annotation, will be indented to match the beginning of the entry, or may be slightly further indented, as in the case of journals.
After the bibliographic citation, drop down to the next line to begin the annotation, but don't skip an extra line. The entire annotation follows the indentation of the bibliographic entry, whether it's N-Y or C-S format.
Annotations in CBE are generally a smaller font size than the rest of the bibliographic information.

After choosing a documentation format, you'll choose from a variety of annotation categories presented in the following section. Each type of annotation highlights a particular approach to presenting a source to a reader. For instance, an annotation could provide a summary of the source only, or it could also provide some additional evaluation of that material.

In addition to making choices related to the content of the annotation, you'll also need to choose a style of writing-for instance, telescopic versus paragraph form. Your writing style isn't dictated by the content of your annotation. Writing style simply refers to the way you've chosen to convey written information. A discussion of writing style follows the section on annotation types.

Types of annotations:

As you now know, one annotation does not fit all! There are different kinds of annotations, depending on what might be most important for your reader to learn about a source. Your assignments will usually make it clear which citation format you need to use, but they may not always specify which type of annotation to employ. In that case, you'll either need to pick your instructor's brain a little to see what she wants or use clue words from the assignment itself to make a decision. For instance, the assignment may tell you that your annotative bibliography should give evidence proving an analytical understanding of the sources you've used. The word analytical clues you in to the idea that you must evaluate the sources you're working with and provide some kind of critique.

Summary Annotations:

There are two kinds of summarizing annotations, informative and indicative.

Summarizing annotations in general have a couple of defining features:

They sum up the content of the source, as a book report might.
They give an overview of the arguments and proofs/evidence addressed in the work and note the resulting conclusion.
They do not judge the work they are discussing. Leave that to the critical/evaluative annotations.
When appropriate, they describe the author's methodology or approach to material. For instance, you might mention if the source is an ethnography or if the author employs a particular kind of theory.

Informative annotation

Informative annotations sometimes read like straight summaries of the source material, but they often spend a little more time summarizing relevant information about the author or the work itself.

Indicative annotation:

Indicative annotation is the second type of summary annotation, but it does not attempt to include actual information from the argument itself. Instead, it gives general information about what kinds of questions or issues are addressed by the work. This sometimes includes the use of chapter titles.


Evaluative annotations don't just summarize. In addition to tackling the points addressed in summary annotations, evaluative annotations:

evaluate the source or author critically (biases, lack of evidence, objective, etc.).
show how the work may or may not be useful for a particular field of study or audience.
explain how researching this material assisted your own project.


An annotated bibliography may combine elements of all the types. In fact, most of them fall into this category: a little summarizing and describing, a little evaluation.

Writing Style:

Ok, next! So what does it mean to use different writing styles as opposed to different kinds of content? Content is what belongs in the annotation, and style is the way you write it up. First, choose which content type you need to compose, and then choose the style you're going to use to write it:


This kind of annotated bibliography is a study in succinctness. It uses a minimalist treatment of both information and sentence structure, without sacrificing clarity. Warning: this kind of writing can be harder than you might think.


Don't skimp on this kind of annotated bibliography. If your instructor has asked for paragraph form, it likely means that you'll need to include several elements in the annotation, or that she expects a more in-depth description or evaluation, for instance. Make sure to provide an entire paragraph's worth treatment of the work.


As you can see now, bibliographies and annotations are really a series of organized steps. They require meticulous attention, but in the end, you've got an entire testimony to all the research and work you've done. At the end of this handout you'll find examples of informative, indicative, evaluative, combination, telescopic, and paragraph annotated bibliography entries in MLA, APA, and CBE formats. Use these examples as your guide to creating an annotated bibliography that makes you look like the expert you are!


"Annotated Bibliography." The Writing Center. 2003. University of Wisconsin, Madison.
5 March 2004 <http://www.wisc.edu/writing/Handbook/AnnotatedBibliography.html>.

Bell, I. F. and J. Gallup. A Reference Guide to English, American, and Canadian
Literature. Vancouver: University of British Columbia Press, 1971. 68.

Bizzell, Patricia and Bruce Herzburg. Bedford Bibliography for Teachers of Writing. 3rd
ed. Boston: Bedford Books of St. Martin's Press, 1991. 47.

Carlson, Laurie. "Annotated Bibliographies." 6 April 2004. KU Writing Center. University
of Kansas. 8 April 2004 <http://www.writing.ku.edu/students/docs/bibs.html>.

Center for Information on Language Teaching and The English Teaching Information
Center of the British Council. Language-teaching Bibliography. Cambridge:
Cambridge University Press, 1968. 146.

Engle, Michael, Amy Blumenthal, and Tony Cosgrave. "How to Prepare an
Annotated Bibliography." 20 November 2002. Reference Services Division, Olin and
Uris Libraries Cornell University Libraries. 8 April 2004

Gibaldi, Joseph, ed. MLA Handbook for Writers of Research Papers. 5th ed. New York:
Modern Language Association of America, 1999.

Grasso, Michael A. "Research Agenda of Foundational Material." Speech Recognition
Annotated Bibliography. Speech Input in Multimodal Environments: Effects of
Perceptual Structure on Speed, Accuracy and Acceptance. 29 March 29, 2004

"How to Write Annotated Bibliographies." 22 April 2003. Queen Elizabeth II Library of
Memorial University of Newfoundland Libraries. 8 April 2004

American Psychological Association. Publication Manual of the American Psychological
Association. 5th ed. Washington, D.C.: American Psychological Association, 2001.

Spatt, Brenda. Writing from Sources. 3rd ed. New York: St. Martin's Press, 1991. 32.

Tate, Thomas. The Write Place. May 2000. St. Cloud State University, Minnesota. 8
April 2004 <http://leo.stcloudstate.edu/research/MLA>.

Copyright for this article belongs to The Writing Center, University of North Carolina at Chapel Hill

This document was re-printed under the Creative Commons License. Original Source of the article is located here: http://www.unc.edu/depts/wcweb/handouts/annotated_bibliographies.html

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