According to Purdue Owl, a web-based citation source used by students and researchers across the globe, you need to cite things that fit any of the following descriptions:
Many people believe that they do not need to cite Creative Commons works, and this is false. Any work that you use must be cited, and this includes media.
Specific rules about citing different types of media differ depending on the citation style that you are using. MLA, APA, Chicago, CSE, and ASA all have different ideas about how media should be cited. You can find copies of all of these style manuals at the research desk, located in Hege Library on the main level.
Web-based guides for citing media:
Creative Commons image citations can be challenging for many people, because it isn't always clear exactly who the image was produced by. Use this guide to help you decide how best to cite these images.
If you have questions about citations, feel free to email firstname.lastname@example.org for more information.