Erwin, E., and F. Ariani. “Unlocking the Power of Virtual Classrooms: Exploring the Impact of Cooperative Learning, Student Engagement, and Online Learning Constraints on Learning Outcomes”. Jurnal Komunikasi Pendidikan, vol. 7, no. 2, July 2023, pp. 82-101, http://journal.univetbantara.ac.id/index.php/komdik/article/view/4383.