EasyBib EDU is a web-based citation and research management tool that generates citations in APA, MLA, Chicago, and many other citation style formats. It also helps users create and manage notes and bibliographies/references. The EDU version of EasyBib, which provides free access to a variety of citation styles, requires a coupon code in order to create an account.
Zotero is a free tool that not only generates citations but it also helps users manage research. Users can tag, organize, and search PDFs, images, and files stored in Zotero. Unlike EasyBib, users must either download Zotero and access it through Firefox's web browser or install the Zotero standalone plug-in if using Chrome or Safari.
The UNG Libraries also have print copies of style manuals for APA, ASA, MLA, Chicago, and Turabian in the Reference section.