An annotated bibliography is a list of citations to books, articles, and documents. Each citation is followed by a brief (usually about 150 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.
Ref: Cornell University LibGuide
After you have selected the source(s) you found relevant and helpful, create an annotation (usually up to 150 words) to let the reader know why that source was a reliable source to use for your research.
The purpose of the annotation is to inform the reader of the relevance, accuracy, and quality of the sources cited.
You could include information about the following: