The ultimate guide to your annotated bibliography is your instructor. We've provided some examples, but your instructor ultimately governs what is required for their assignment.
An annotated bibliography is a Works Cited or References page which also includes a brief summary and evaluation of each selection. It generally follows a certain format (MLA, APA, or another citation style), but always contains citations followed by descriptions. The annotated bibliography can also be used as an instrument for keeping track of both references and research.