Zulkarnain, Ihwan. “Pengaruh Model Pembelajaran Problem Based Learning Terhadap Kemampuan Pemecahan Masalah Matematika”. PTK: Jurnal Tindakan Kelas 4, no. 1 (November 30, 2023): 149–157. Accessed May 16, 2024. https://jurnal.ciptamediaharmoni.id/index.php/ptk/article/view/298.