Zotero is a free, open-source tool that helps you collect, organize, and share research sources; generate citations; and create bibliographies. It's one of many citation management tools such as EndNote, Refworks, and Mendeley.
Download Zotero if you need a citation management tool that
If you just need to create a quick bibliography, use ZoteroBib instead.
Note: Zotero will update to newer versions automatically.