Zotero is a free citation management system, originally developed by George Mason University. Use it to collect, organize, annotate, and cite sources in whatever citation style you need: APA, MLA, Chicago, NLM, AMA, and more, as well as journal-specific styles (over 10,000 styles are available). Zotero has a steep learning curve, so be prepared to spend time with it as you begin, knowing it will ultimately pay off! Bottom line: Zotero is a huge time-saver and a great organizational tool for your research.