SIMATUPANG, M.; AJISMAN; NASUTION, R. S. H. Improving Student Learning Outcomes by Using the Problem Based Learning Method in Islamic Education Learning at SMA Negeri 2 Sibolga. Jurnal Pendidikan Profesi Guru, [S. l.], v. 1, n. 2, p. 16–22, 2023. Disponível em: https://journal.ar-raniry.ac.id/ppg/article/view/6696. Acesso em: 23 feb. 2025.