Hilmi, Raed. "Cengage ". OER Commons. Institute for the Study of Knowledge Management in Education, 08 Nov. 2018. Web. 02 May 2024. <https://oercommons.org/authoring/49018-cengage>.
Hilmi, R. (2018, November 08). Cengage . OER Commons. Retrieved May 02, 2024, from https://oercommons.org/authoring/49018-cengage.