Try to think of your presentation as a mini-version of your paper that presents all the key points and "highlights" - i.e., your hypothesis and variables, your argument for why you propose that particular hypothesis, your hypothesis tests, and your main findings. This would also include references to relevant literature, yes. Usually as part of your argument for why you think that there will be that particular relationship between your variables. You may also want to include a few sentences on your case study as an illustration (if you have it already). However, also remember that the references to the literature are just one part of your presentation (and of your final paper).
--Birgit Pauksztat, TA
Presentations are in powerpoint, overheads or web-based