Zotero is free open source citation management software by an independent, nonprofit organization that you can use as either a desktop application or an online account.
Zotero also allows you to create shared folders so that you can work together with your colleagues and its desktop version includes a Microsoft Word plugin which will automate the creation of your citations and bibliography. Zotero is also compatible with Google Docs, Open Office, and other free word processing programs as well as screen reading software.
Zotero maintains that they have no financial interest in your private information and data.
UNCParkLib. (2019, Feb 19). Using Zotero. [Video file]. Retrieved from https://youtu.be/7GTfdl7hM3s