Thanks everyone for the comments and suggestions. It's been awhile since I last applied to graduate school and I guess things have changed since I didn't include a works cited with my writing sample the last time I applied. I suppose competition is stiffer than it was a decade ago and every bit counts. I fiddled with my font and now I'm at 32 with the works cited so I think it's good bar editing from my reviewers.
I've prepared my writing sample and have it out for review at the moment, but I wanted to see if others were concerned about not including their works cited. I hadn't planned on it as I'm already two pages over the requested limit, but I guess I'm questioning that decision now...