Zotero is a FREE citation tool that you add to your web browser, or use as a standalone application.
You have two options for using Zotero:
1) Download Firefox Extension (for Macs and PCs)
Choose this option if you exclusively use Firefox or if you have a PC.
Verify the Zotero web importer is installed by looking for the following menu in Firefox:
Download the plugin for using Zotero with MS Word or LibreOffice. Verify that the plugin is installed by opening MS Word and clicking on the Scripts icon, where you should see this:
On a PC, the MS Word plugin is listed as a toolbar on the Add-on menu, where you should see the following:
2) Download Standalone Version for Mac (Mac only)
Choose this option if you have a Mac AND you want the flexibility of using your choice of Internet browser (Firefox, Chrome, or Safari).