Suparjan, Suparjan, Haryanto Haryanto, Murjainah Murjainah, and Nining Ismiyani. “The Influence of Problem-Based Learning Model to Indonesian Language Primary Classrooms: A Meta-Analysis”. Journal of Education Research 5, no. 2 (May 5, 2024): 1785–1791. Accessed August 2, 2025. https://jer.or.id/index.php/jer/article/view/977.