Suyitno, Suyitno, and Dhania Nugrahaning Purwasuyitno. “The Effect of Problem Based Learning Model on Students’ Critical Thinking Abilities: -”. DIAJAR: Jurnal Pendidikan dan Pembelajaran 5, no. 4 (October 10, 2026): 1420–1429. Accessed October 12, 2026. https://www.journal.yp3a.org/index.php/diajar/article/view/8495.