An annotated bibliography provides specific information about each source you have used. Annotations can serve a variety of functions, such as explaining the content of your sources, assessing their usefulness, and sharing this information with others who may be less familiar with them. In short, the annotated bibliography allows readers to determine what might be worth checking out in some situations, as well as what might not be worth spending the time on.
The quality and usefulness of your bibliography will depend on your selection of sources. Define the scope of your research carefully so that you can make good judgments about what to include and exclude. Your research should attempt to be reasonably comprehensive within well-defined boundaries. Consider these questions to help you find appropriate limits for your research: