Learn about Faulkner's own life, you'll get a lot of insight as to the kinds of language he grew up hearing around him.

I like galenet:
http://galenet.galegroup.com/servlet/Scribner/s1243

Faulkner is often credited with being "the father of stream of consciousness" writing; you might try that as a search term.

My personal favorite database is ERIC:
http://www.eric.ed.gov/ With this one, your best bet is to use dynamic search phrases using Boolean operators.

If you use your university library's portal you'll discover dozens of academic databases that will provide you with very distinct articles about nearly every possible aspect of your pursuit. Be careful, some of them charge $hundreds per hour, so have your search statements prepared in advance so you can spend only one or two minutes using them!!!