MLA no longer requires a URL in electronic resource citations.
For scholarly journal articles that only exist in electronic format on the Web, cite the work like you would a print article AND conclude the article with the following items:
1. Medium of publication (Web)
2. Date of access (day, month, and year)
No page numbers? Use "n. pag." in place of page numbers.
Example: Dolby, Nadine. “Research in Youth Culture and Policy: Current Conditions and Future Directions.” Social Work and Society: The International Online-Only Journal 6.2 (2008): n. pag. Web. 20 May 2009.
For articles retrieved full text from an online database, include the name of the database in front of "Web".
Example: Chan, Evans. "Postmodernism and Hong Kong Cinema." Postmodern Culture 10.3 (2000): n. pag. Project Muse. Web. 20 May 2007.
Course or Department Websites:
Example: Felluga, Dino. Survey of the Literature of England. Purdue U, Aug. 2006. Web. 31 May 2007.
For a page on a website, be sure to use n.p.if no publisher name is given, and n.d. if no date is given.
Example: "How to Make Vegetarian Chili." eHow.com. eHow, n.d. Web. 24 Feb. 2009.