Yit Leng, Soon, Muhammad Shazwan Sheikh Abdul Razak, and Tah Mei Sze. “An Exploratory Study in Flipped Classroom”. Journal of Science and Mathematics Letters 5 (December 1, 2017): 52–62. Accessed April 7, 2025. https://ejournal.upsi.edu.my/index.php/JSML/article/view/403.