SIREGAR , Ersa Rido. Application of Problem Based Learning Model to Improve Student Learning Outcomes at SD Negeri 081238 Sibolga. Jurnal Pendidikan Profesi Guru, [S. l.], v. 2, n. 2, p. 126–134, 2024. DOI: 10.22373/jppg.v2i2.6762. Disponível em: https://journal.ar-raniry.ac.id/index.php/ppg/article/view/6762. Acesso em: 12 sep. 2025.