Final Paper

I'm a little worried about my final paper. I know what my thesis is, and what I want to say, but I'm still having trouble finding a good solid source. I find information on Siena's website, and littler articles here and there, but I can't seem to find that one substantial source for my paper. the same goes for my two other research papers I am currently working on for my other classes. I'm getting really nervous, it's getting close to my deadlines and I'm still not fully satisfied with what I have. Hopefully I'll be able to find a way to make this all work.