Encyclopedias and dictionaries, both online and printed.
Books at W&L and elsewhere.
Databases of articles in journals, magazines, and newspapers, as well as other materials.
The Sloan Network, statistics, etc.
You can consult a quick overview of American Sociological Association Style on the ASA site, while more complete coverage, especially of online sources, is in the printed guide in the library.
Advice on avoiding plagiarism is available here.
If you would like some help with this research, you can contact Senior Reference Librarian Dick Grefe.