The phrase “annotated bibliography” can sound a little scary!
But it is really just an alphabetical list of citations to books, articles, and web documents (like a regular bibliography, works cited or references page). Each citation is then typically followed by a descriptive and evaluative paragraph (the annotation). The purpose of the annotation paragraph is to give a brief description of the content of the source and to evaluate the source’s methods, conclusions, and usefulness to your research.
Your instructor should tell you if your annotation should be one or two paragraphs, and what should be covered in each paragraph.
For tutorials and sample annotations, see