If you need quick APA formatting information checkout the APA Citation LibGuide
For more detailed inquiries, remember to check the 6th edition of the Publication Manual. Also, if you have a questions about a new technology or peculiar citation, check the APA Style Blog. The Style Blog is run by a group of amazing people who are employed by the American Psychological Association.
Mendeley is free online reference citation management tool that allows you to manage, organize, write, cite and collaborate with folks locally and internationally. As a web-based tool, you can sync desktop and web searching.
For more information check out the Mendeley LibGuide
RefWorks is a Web-based citation manager that allows you to import references from text files, web sites or online databases. You can use RefWorks to format a paper and a bibliography in seconds. (First time users should sign up for an individual account and select a username and password).
Refwork Group Code RWUSC
Checkout the RefWorks LibGuide for more information
Here is a brief guide to walk you through the process to set up your account and other features of RefWorks.