Katz, Kate. "How to Search OER Commons". OER Commons. Institute for the Study of Knowledge Management in Education, 02 Dec. 2013. Web. 25 May 2018. <https://www.oercommons.org/authoring/4465-how-to-search-oer-commons>.
Katz, K. (2013, December 02). How to Search OER Commons. OER Commons. Retrieved May 25, 2018, from https://www.oercommons.org/authoring/4465-how-to-search-oer-commons.