Purdue Online Writing Lab: MLA
The Purdue Online Writing Lab is Mr. F's go to source for the right stuff on in-text citations and works cited pages in MLA format. Try it. It will make citing your research that much easier.

Purdue Online Writing Lab: APA
Citation and Style Tutorial from the APA
Check out this video for a nice how-to on in-text citations in APA format. As a bonus, there is some solid information on what research means and why we use it.