In addition to using print materials, your assignment may require you to use other kinds of sources such as visual/graphic sources (art prints, slides, maps, etc.), numeric sources (statistics, etc.), audio sources (cassette tapes, CDs, etc.), or electronic sources (mailing lists, computer files, the Web, etc.).

For assignments such as debates or argumentative essays, you may need to find information that presents a particular point of view, opposing points of view, or a range of viewpoints.