An annotation summarizes the essential ideas contained in a document, reporting the author's thesis and main points as well as how they relate to your own ideas or thesis. There are two types of annotations: summative and evaluative. Summative annotations only describe the source. Evaluative annotations describes how the source contributes to your research.
Annotations are typically brief (one paragraph) but may be longer depending on the requirements of your assignment.
Check with your instructor to determine the citation format, length and the type of annotations you will be writing. Remember, the annotation should show that you have done more than simply describe the source.
An annotated bibliography can:
Here is some information your annotation might include:
Examples of MLA and APA styles of annotations can be found at https://owl.purdue.edu/owl/general_writing/common_writing_assignments/annotated_bibliographies/annotated_bibliography_samples.html Purdue University Online Writing Lab (OWL)