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:
An annotation briefly restates the main argument of a source. An annotation of an academic source, for example, typically identifies its thesis (or research question, or hypothesis), its major methods of investigation, and its main conclusions. Keep in mind that identifying the argument of a source is a different task than describing or listing its contents. Rather than listing contents, an annotation should account for why the contents are there.
The following reading strategies can help you identify the argument of your source:
Your annotation should now go on to briefly assess the value of the source to an investigation of your research question or problem. If your bibliography is part of a research project, briefly identify how you intend to use the source and why. If your bibliography is an independent project, try to assess the source’s contribution to the research on your topic.
In order to determine how you will use the source or define its contribution, you will need to assess the quality of the argument: why is it of value? what are its limitations? how well defined is its research problem? how effective is its method of investigation? how good is the evidence? would you draw the same conclusions from the evidence?
Keep the context of your project in mind. How is material assessed in your course or discipline? What models for assessing arguments are available in course materials?