Two criteria you may use for evaluating sources are the validity and the relevance of the source to your topic. Read pp. 344-356 in the Handbook to learn more about what makes a source valid. Then, find one source in a library database on your book. Cite it and tell us why you would consider it valid. Then, find a source online. Cite the source accurately, and then tell us why you think this source would or would not be considered valid.