Rehman, Rehana, and Syeda Sadia Fatima. “An Innovation in Flipped Class Room: A Teaching Model to Facilitate Synchronous and Asynchronous Learning During a Pandemic”. Pakistan Journal of Medical Sciences 37, no. 1 (December 8, 2020). Accessed April 25, 2024. https://pjms.org.pk/index.php/pjms/article/view/3096.