SAFITRI, Dhiena; NAPITUPULU, E. Elvis; KHAIRANI, Nerli. Development of Problem-Based Learning Teaching Materials to Improve Mathematical Problem Solving Ability and Self-Efficacy Students. Jurnal Perspektif, [S. l.], v. 8, n. 1, p. 137–148, 2024. DOI: 10.15575/jp.v8i1.298. Disponível em: http://perspektif.uinsgd.ac.id/index.php/JP/article/view/298. Acesso em: 6 jul. 2025.