A bibliography is a list of reference materials (books, journal articles, dissertations, etc.) An annotated bibliography includes a summary and/or evaluation of each reference source.
The sources themselves are listed as citations. A citation is the information needed to locate a particular book or article. It includes:
Use citations to credit the author and material referenced in an academic assignment.
An abstract is a summary of the material usually included with the citation. It can be used to determine if the book or article is relevant to your research topic.