Citing your sources properly -- including any images that you include in your paper -- is important and required.
Purdue University's OWL Writing Lab Citation resources are the best ones out there on the web. Generally, Africana Studies courses require that you use either MLA style or Chicago style. Detailed information on both citation styles are availble here.
Diane can help with citations, too!
Perhaps the most important resource students of Africana Studies need are scholarly (and often peer-reviewed) journal articles. These can be difficult to find, especially if you rely on the open web. Instead, start in some of these databases to find journal articles. If you find a record for something that isn't full text, you'll need to use InterLibrary Loan to request it.