NU Library provides all students with free access to NoodleTools, a web program that can generate citations for you, along with other features such as notetaking and collaboration.
To access it, go to the Library homepage, scroll down to "Quick Links" and click "NoodleTools." The first time you use it, you'll need to create a free account.
See NU Library's NoodleTools playlist to learn how to get started, create citations, take notes, and collaborate.