Penn State offers various guides and tutorials to help you cite your work correctly:
Many Penn State locations have "Academic Achievement Centers," "Learning Centers," or other offices where you can obtain coaching and feedback on your writing. Here are the largest ones:
If you do not see your location above, find your campus's website, click on the "Academics" link at the top of the page, and look for links to "Academic Resources" or "Academic Support."
Also, these books, tutorials, and videos can help: