1.
Rambe AH, Sari AJ, Siregar H, Ritonga NZ, Novita N. Efektivitas Model Pembelajaran Problem Based Learning Pada Siswa Kelas 5 Sekolah Dasar. JPDK [Internet]. 2022 Jul. 6 [cited 2025 Dec. 7];4(4):423-8. Available from: https://journal.universitaspahlawan.ac.id/index.php/jpdk/article/view/5251