MLA documentation: works cited
Example:

The student has quoted from “Facebook Hitman Highlights Organized Crime’s Online Presence,” by Miriam Wells, a short work on an unpaginated Web site, InSight Crime, sponsored by Open Society Foundations. The publication date is June 21, 2013, and the article is located at this URL: http://www.insightcrime.org/news-analysis/facebook-hitman-highlights-organized-crimes-online-presence.

Wells, Miriam. “Facebook Hitman Highlights Organized Crime’s Online Presence.” InSight Crime, Open Society Foundations, 21 June 2013, www.insightcrime.org/news-analysis/facebook-hitman-highlights-organized-crimes-online-presence.

Wells, Miriam. “Facebook Hitman Highlights Organized Crime’s Online Presence.” InSight Crime, 21 June 2013, www.insightcrime.org/facebook-hitman-highlights-organized-crimes-online-presence.

A works cited entry for a Web site should include the sponsor's name following the title of the site (unless the sponsor is clear from the title or the author).