There are 2 common types of annotations - descriptive and critical or evaluative.
Descriptive annotation may summarize:
- The main purpose or idea of the work
- The contents of the work
- The author’s conclusions
- The intended audience
- The author’s research methods
- Special features of the work such as illustrations, maps, tables, etc." (University of Wisconsin, 2010)
"Critical annotation includes the same information as a descriptive annotation, but will also include value judgments or comments on the effectiveness of the work. [In this context, critical means evaluative and may include both positive and negative comments.] When writing a critical annotation, include some of the these features:
- The importance of the work’s contribution to the literature of the subject
- The author’s bias or tone
- The author’s qualifications for writing the work
- The accuracy of the information in the source
- Limitations or significant omissions
- The work’s contribution to the literature of the subject
- Comparison with other works on the topic" (University of Wisconsin, 2010)