Here is a good, basic formula for getting started with your research:
An annotated bibliography is a list of citations to books, articles, web sources, media, etc. Each citation is followed by a brief (approximately 150 words) descriptive and evaluative paragraph. The purpose of the annotation is to inform the reader of the relevance, accuracy, and quality of the sources cited. Annotations should not be confused with abstracts, which are summaries of content. Annotations are both descriptive and critical.