Be aware that information vary in terms of coverage of a topic. Note whether an information source adds to other information you have used or gathered.

A good way to get an overview of the coverage of an information source is by browsing the material. Check the table of contents, index, or abstract/summary, if available.

Ask yourself the following:

• How extensively does the information source cover your topic in terms of time?

• How extensively does the information source cover your topic in terms of geography?

• How extensively does the information source cover your topic in terms of specificity?

• How extensively does the information source cover your topic in terms of point of view?

• Is the information complete or abridged?