How do I cite 2 diffrent works by the same author?

it depends on whether you mean in-text citations or full citations. if you mean full citations, then just cite them as you normally would for journal articles and pay no attention to the fact that the authors are the same. ex:

last name, first name. "some random study". Journal of Some Branch of Science (italicized) 6.6 (2010): 615-635. Web (or Print if you used that) 25. Mar. 2010

if you mean in-text citations, which i think you mean because that's where you'd run into a problem with authors names, you'd simply include a shortened version of each article and the respective page number in parentheses:

"If you cite more than one work by a particular author, include a shortened title for the particular work from which you are quoting to distinguish it from the others.

Lightenor has argued that computers are not useful tools for small children ("Too Soon" 38), though he has acknowledged elsewhere that early exposure to computer games does lead to better small motor skill development in a child's second and third year ("Hand-Eye Development" 17)."-from the Purdue Owl MLA Formatting and Style Guide.

Try using EasyBib.com. You can cite up to 55 different source types. For journals, go to www.easybib.com/cite/form/journal and fill in as much information you know. Once done compiling your list, EasyBib will then format your bibliography in Word

If you are using in text citation and referring to works by the same author, also include the article name in your in text citation, in quotes, to help distinguish the works by the author.

For more information regarding in text citations, go to: http://cdn.easybib.com/media/guides/easybib-mla7-p...

if you go to citationmachine.net you will get the information that you are looking for. It is a free site and will actually do the format for you. Just do an internet search for "citations" and it is usually the first one on the list.