“PENGARUH MODEL PEMBELAJARAN PROBLEM CENTERED LEARNING (PCL) TERHADAP KEMAMPUAN BERPIKIR”, JPPM, vol. 1, no. 1, pp. 1–10, Jan. 2020, Accessed: Mar. 14, 2025. [Online]. Available: https://jurnal.mipatek.upgripnk.ac.id/index.php/JPPM/article/view/7