Syafii, Muhammad. “The Application of the Problem-Based Learning Model to Improve Learning Outcomes in Islamic Education and Character Building”. Jurnal Keprofesian Guru Keagamaan 3, no. 2 (August 1, 2024): 79–91. Accessed March 7, 2026. https://ejournal.uinsgd.ac.id/index.php/jkgk/article/view/652.