Elas, N. I. B., Majid, F. B. A. and Narasuman, S. A. (2019) “Development of Technological Pedagogical Content Knowledge (TPACK) For English Teachers: The Validity and Reliability”, International Journal of Emerging Technologies in Learning (iJET), 14(20), pp. pp. 18–33. doi: 10.3991/ijet.v14i20.11456.