Idkhan, A. Muhammad, Andi Muhammad Irfan, Iswahyudi Indra Putra, and Achmad Romadin. “The Effect of Problem-Based Learning Model on Learning Motivation and Its Impact on Students’ Learning Achievement”. International Journal of Integrative Sciences 3, no. 6 (June 28, 2024): 539–550. Accessed June 2, 2026. https://journal.formosapublisher.org/index.php/ijis/article/view/9348.