I am always get a bit confused on how to site anything other than books in MLA format.
Answer
Yes, keeping up with all of the details about a citation format such as the MLA style isn't easy, especially as things change and new types of information sources appear.
On the library web site, librarians have put together guides to many of the different kinds of citation formats including MLA 7th edition. To find these guides, go to the library homepage (http://www.uhd.edu/library) >> the Citing Sources tab>>MLA.
If these guides don't cover a source you need to cite, you can view the full MLA citation style book in the library (ask for it at the desk in the library's 4th floor computer lab) or try the first three links under the Citation Links heading on the home tab of the MLA guide.