When creating your debate bibliography, you can use the school subscription to EasyBib and the OWL site as usual. However, if you have an unusual source to cite, these may not be enough. This MLA site is a little more thorough.
Remember, you cannot guess how to cite a source! You must look everything up–especially if the type of source is not typical. (And be especially careful of citing any visual–photo, map, chart, video, etc. This is where I usually see the most mistakes.)