RefWorks, Legacy RefWorks, EndNote, EndNote Basic, and Zotero are citation management programs. They allow you to:
A citation is an electronic record for a book, journal article, website, film or other published item. It includes the author, title, source (publisher or URL), and date.
The following are all bibliographic/citation management programs that let you build your own library of citations, organize & share your citations, build reference lists with the click of a button, format papers with in-text citations, and more. If the program isn't free, it likely offers a free 30 day trial. This is just a handful of citation managers available.