Of the sources, at least one must be a book, one must be an academic journal, and one must be a multimedia resource (such as an audio recording, photograph or video. Then summarize the source – that is, condense the content in your own words. A summary should not be too long – just a paragraph reporting the author’s most important points. Next, evaluate the credibility of the source in terms of author bias and subject area accuracy. What clues are present in the work which cause you to make that judgment? You may wish to use the CRAAP Analysis system developed by California State University, Chico.