Zotero is an open source citation manager that describes itself as a free, easy-to-use tool to help you collect, organize, cite, and share research. Available for Mac, Windows, and Linux, it integrates with Word and LibreOffice and supports thousands of citation styles.
Zotero has very robust documentation. If you don't find what you need on this quick guide, be sure to check the official documentation. If you would like one-on-one assistance, you can schedule an appointment to meet with me.
Want to generate a single bibliography without downloading and learning a new program – and without being bombarded by advertisements? Zoterobib is a new tool from the folks at Zotero, and it does just that.