Hidayu Shafie, Faizah Abd Majid, and Izaham Shah Ismail. “Developing a 21st Century Technological Pedagogical Content Knowledge (TPACK) Instrument: Content Validity and Reliability”. International Journal of Education 14, no. 3 (June 18, 2024). Accessed October 5, 2024. https://macrojournal.org/index.php/ije/article/view/1166.