EndNote is a commercial citation management program owned and operated by Clarivate Analytics (spun off from its former owner, Thomson Reuters). EndNote basic, the web-based version, is available for free but only allows for integration with Web of Science for institutions that have a subscription to it, such as Stevens.
EndNote basic comes with 2GB of storage.
The full version of EndNote is available for a fee (EndNote X8, $299.95 MSRP), but student rates are available.
Note: you will need to create an account to start using EndNote basic.
Stevens does not have an institutional subscription to a citation manager, but you can make use of EndNote's integration with the Stevens subscription to Web of Science (as they are owned by the same company). You will need to register for an account to begin using EndNote basic. You can continue to use EndNote basic after you leave Stevens.
EndNote comes preloaded with 21 citation styles. You can add these to your "favorites" under the Format tab, and then under Bibliography. Find the one you need and click "Copy to Favorites", and it will then show up in the menu as a style to use when you format your paper or export references.
Note: you cannot download new files to EndNote basic beyond what is already included.