Chien, Posheng Vincent, Inna Dzabelova, Charu Gupta, and Zi Ning Wee. “Instructors’ Perceptions of Using Videos in Flipped Learning: A Reflective Study on Online Discussion Classes”. International Journal on Open and Distance e-Learning 7, no. 1 (June 30, 2021). Accessed April 19, 2024. https://ijodel.upou.edu.ph/index.php/ijodel/article/view/64.