If you only refer to the items I posted on the website in your essay (the online script of Catastrophe that I noted, and the film (on YouTube or on the disc I provided), then you do NOT need to incude a Works Cited page, as I will assume that your only sources are the two I provided. If you have referred to any other sources while conducting your research, and the ideas in those sources make any kind of appearance in your essay, then you must of course cite those sources following regular guidelines — see the link to the MLA page on this website, for example. As I said in class, I do not recommend consulting outside sources, because the focus of this essay is on your analysis, and not on research.