Hasibuan, Syarinah Junianti, and Anim Anim. “Analysis of Student Mathematics Learning Results Using the Problem Based Learning Model”. Holistic Science 4, no. 1 (April 7, 2024): 24–29. Accessed July 8, 2025. https://jurnal.larisma.or.id/index.php/HS/article/view/480.