Yustina, Imam Mahadi, Devi Ariska, Arnentis, and Darmadi. “The Effect of E-Learning Based on the Problem-Based Learning Model on Students’ Creative Thinking Skills During the Covid-19 Pandemic”. International Journal of Instruction 15, no. 2 (April 1, 2022): 329–348. Accessed July 18, 2024. https://e-iji.net/ats/index.php/pub/article/view/387.