Zoterobib is a quick online tool if you want quick reference (end-of-paper) citations. Just enter a URL, DOI, title, etc. and select your citation style.
Zotero (zoh-TAIR-oh) is a free citation management app that helps you gather, manage, cite, and share your research sources.
Use Zotero to:
See Zotero support, including hints on adding items, organizing your library, creating bibliographies, syncing materials, and helpful tips and tricks.
Check out the University Library's Zotero guide for more help.