Citing openly licensed materials, whether they're images or videos or textbooks, is often referred to as "attribution" in the OER world.
To "attribute" something, you are giving credit. It's the same idea as "citing" - just a different term for it.
Citing = Attributing
Citation = Attribution
You can cite or attribute openly licensed materials in different ways.
Review this Citing OER page from the Open Textbook Initiative Subject Guide for further information.
You can also find out about OERs or the Open Textbook Initiative by reviewing the Open Textbooks | Pressbooks Publishing Platform.
Contact your School Librarian for further assistance.