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All images that you use in a presentation or report should be cited on your works cited page. The problem is that it is hard (or almost impossible) to tell who actually owns an image you find online. Using images that have Creative Commons licensing can make that much easier.  Use the websites below for images, videos, or even sound files that are licensed for reuse.

Pixabay

Pixabay

Wikimedia CommonsWikimedia Commons

ccMixter

flickr