Regarding the instructions given by your professor or what is essential for your reader, there are three categories of annotations.
A regular method cannot be used to describe all kinds of annotations because one annotation does not suitably fit all purposes.
From the annotated bibliography example above that used apa bibliography format, one can see the author’s point of view.
It is also crucial to mention that annotated bibliography saves you time to an extent.
There is no attempt to provide actual data like hypothesis, proofs, etc. There are annotated bibliographies that contain a combination of annotations.
These types of annotations describe or summarize the topic, and then evaluate the usefulness of the source and a summary.
A brief description follows each citation (usually 150 words) and evaluative paragraph.
The purpose of annotative is to make the reader understand the relevance, accuracy, and quality of the sources cited.
All the relevant information about the author gets summarized by the author and also the main points of work.
To write an informative annotation, you should start with writing the thesis, develop it with the argument; list the proofs and state the conclusion.