There are several options when selecting citation management software. Two commonly used programs, EndNote and SciWheel (formerly f1000) are licensed by the University of Pittsburgh. Two other programs, Mendeley and Zotero are freely available.
APA Style is about more than what your in-text and end-of-paper citations look like. The Style Manual covers tables, gender-neutral language, ethical reporting, how to write up different kinds of studies, manuscript structure, and much more. Very handy guide to writing!