Derlina, Satria Mihardi, Alkhafi M. Siregar, and S. Hakim. “The Effectiveness of Using Alternative E-Learning Using Case Method in Physics Learning in Dealing With Changes in Learning Modes During a Pandemic”. Advances in Social Sciences Research Journal 10, no. 1 (January 12, 2023): 1–07. Accessed December 1, 2024. http://804474.wannyin.cyou/index.php/ASSRJ/article/view/13589.