If you want to reference one of the articles on this website, here is a MLA example that you can use.
"The Pros and Cons of Capital Punishment." Phil for Humanity. N.p., 13 Feb. 2008. Web. 24 Mar. 2015.
Note that the "N.p." stands for "no publisher" for when the writer does not publish their name.
Alternatively, you can use the Easy Bib's Website to automatically cite a website.
by Phil for Humanity