The Chicago Manual of Style (CMOS) (17th ed.) covers a variety of topics from manuscript preparation and publication to citation standards, grammar, usage, and documentation and has been lovingly called the “editor's bible.”
An annotated bibliography is a list of citations to books, articles, and documents. Each citation is followed by a brief (50-100 words) descriptive and evaluative paragraph, the annotation. The purpose of the annotation is to inform the reader of the relevance, accuracy, and quality of the sources cited. See this site for pointers on developing your annotations.