To cite your OER source using MLA citation style, first create a citation using the MLA style guide, and then simply add the CC or public domain license info at the end of your regular citation. For more detailed information, go to Citing OERs guide.
Lincoln, A. et al. Human Rights. MIOpenBook, 2017. OER Commons, http://www.oercommons.org/courses/world-history/view. Accessed 29 January 2019. CC BY-NC-SA 4.0 license.
Roe, Karen. Leads Castle. 2012 Online image. Flickr. Web. 29 January 2019. Retrieved from https://flic.kr/p/c35GPj. CC BY 2.0 license.
“History and Prehistory: The Origin of Humans and Human Societies.” YouTube. Uploaded by Khan Academy. 16 January 2017, https://www.youtube.com/watch?v=Pz3XiJac57w. <https://flic.kr/p/c35GPj> CC BY license.