A few encyclopedias for introductions or overviews on a topic.
Books and similar materials at W&L and elsewhere.
Databases listing articles in journals, magazines, and newspapers.
Help various citation styles, such as University of Chicago, as well as advice on avoiding plagiarism, is available from http://go.wlu.edu/plagiarism.
If you need some help with this research, you can contact Senior Reference Librarian Dick Grefe.