Be sure to check with your professor when unsure of which citation style to use.
If you need help structuring your citations, check out the different style manuals (listed below) or consider using ProQuest RefWorks, provided by SU Libraries. When using RefWorks, create an account with your SU credentials so you can advantage of all of the site's features.
Zotero is also a citation manager option. Zotero is an open source software that is free for download, and performs many of the same tasks as RefWorks.
Remember: you always have the most control over the accuracy of your citations when you do it by hand using the selected style manual. Check any automatically generated citations for correctness.