NOVANDI, Fadli. Improving Student Learning Outcomes in Islamic Education Learning Using the Problem Based Learning Model at SMP Negeri 1 Sibolga. KOPELMA: Scientific Journal of Education and Teaching, [S. l.], v. 1, n. 1, p. 122–128, 2024. Disponível em: https://journal.mgedukasia.or.id/index.php/kopelma/article/view/333. Acesso em: 10 mar. 2025.