An annotated bibliography is a descriptive and/or evaluative list of citations for books, articles, or other documents. Each citation is followed by a brief (100-200 word) paragraph—the annotation—consisting of a summary of the content of that source and/or the author's thoughts on the accuracy, quality, and relevance of that source. An annotation (written by the author of the bibliography) is not the same thing as an abstract (written by the author or publisher of the cited source).
An annotated bibliography...
If you are creating an annotated bibliography as a course assignment, it is important that you know and understand the specific guidelines or expectations your professor has for it. Always defer to course-specific instructions!
Depending on the purpose of your bibliography, different elements will be more important and some may not be important at all. Your professor may also have guidelines or be able to talk about specific expectations. In the absence of such guidelines, consider the purpose of your bibliography and then select appropriately from the following elements:
Author information
Who is the author? What is her/his background? Is the author qualified to write this document?
Author's purpose
What is the author's purpose in writing this article or doing this research? Is the purpose stated or implied? Does the author have a particular message?
Audience information
To what audience is the author writing (scholars, teachers, the general public, etc.)? Is this reflected in the author's style of writing or presentation?
Author bias
Does the author show any biases or make assumptions upon which the rationale of the article rests? If so, what are they?
Information source
What methods did the author use to obtain the data? Is the article based on personal opinion, experience, interviews, library research, questionnaires, laboratory experiments, empirical observation, or standardized personality tests?
Author conclusion
What conclusions does the author draw? Are these conclusions specifically stated or implied?
Conclusion justification
Are the conclusions justified from the research or experience? Are the conclusions in sync with the original purpose of the research and supported by the data? Are the conclusions skewed by bias?
Relationship to other works
How does this work compare with others cited? Does it conflict with conventional wisdom, established scholarship, government policy, etc.? Are there specific studies or writings cited with which this one agrees or disagrees? Are there any opinions not cited of which readers should be aware? Is the evidence balanced or weighted in favor of a particular perspective?
Time frame
Is the work current? Is this important? How does the time in which it was written reflect on the information contained in this work?
Significant attachments
Are there significant attachments such as appendices, bibliographies, illustrations, etc.? Are they valuable or not? If there are none, should there be?