Scholarly, multi-disciplinary full-text databases (indexes). EBSCO also contains the following subject-specific databases: ATLA, Business Source Premier, CPLI, ERIC, History Reference Center, Literature Reference Center Plus, PsycArticles, and PsycINFO. Click "All EBSCOhost Reference Databases" link and checkmark databases/indexes to search more than one database at a time.
Encyclopedias, dictionaries, etc., on a range of subject-specific titles covering everything from art to accountancy and literature to law.
A Google Search is fine for this project--but to ensure that you are finding credible sources--try to look for sources that are from:
.EDU
.ORG
.GOV
Some .COMS are okay--for example, something from a reputable magazine like American Heritage or an online encyclopedic resource should be okay.
DON'T FORGET PICTURES AND MAPS FROM INTERNET SOURCES REQUIRE CITATIONS!
If you aren't certain, always ask your professor if the source you are hoping to use will be acceptable.