Liu, Yanna. "English learner". OER Commons. Institute for the Study of Knowledge Management in Education, 15 Jan. 2019. Web. 31 Aug. 2024. <https://oercommons.org/authoring/51285-english-learner>.
Liu, Y. (2019, January 15). English learner. OER Commons. Retrieved August 31, 2024, from https://oercommons.org/authoring/51285-english-learner.