According to APA Manual (7th Ed.), "[a]n annotated bibliography is a type of student paper in which reference list entries are followed by short descriptions of the work called annotations" (p. 307).
There are a couple main types of Annotated Bibliographies:
Descriptive annotations describe or summarize the source without evaluating the source. Critical annotations summarize the source, as well as evaluate or analyze the content.
Summaries might include author information, main points or arguments, conclusions, why the source is useful, distinctive features (charts, images, etc.),as well as other descriptive information. Consult with your instructor about what they would like included.
Evaluations might include strengths and weaknesses of the source, applicability to your research, reliability and bias of source, comparison to other sources, as well as other evaluations. Consults with your instructor about what they would like included.
When formatting an annotated bibliography, follow APA Style guidelines for margins, font, line spacing, and references as you would any other paper. Your instructor should set all other requirements such as number of references to include, length and focus of each annotation, etc.
If you have no other guidance on formatting your annotated bibliography, follow the APA Manual's formatting:
American Psychological Association. (2020). Publication manual of the American Psychological Association (7th ed.). https://doi.org/10.1037/0000165-000
Pierce College Library. (2020, October 29). Annotated bibliographies. https://library.piercecollege.edu/c.php?g=418583&p=2852859
Purdue OWL. (2021). Annotated bibliography samples. https://owl.purdue.edu/owl/general_writing/common_writing_assignments/annotated_bibliographies/annotated_bibliography_samples.html
University of Maryland Global Campus Library. (2021, July 29). How to write an annotated bibliography - APA Style (7th edition). https://libguides.umgc.edu/c.php?g=1141218&p=8325874#s-lg-box-wrapper-31045187
