SUJANI, N. N. . MODEL PEMBELAJARAN PROBLEM BASED LEARNING UNTUK MENINGKATKAN PRESTASI BELAJAR MATEMATIKA. Jurnal Bakti Saraswati (JBS), [S. l.], v. 10, n. 1, 2021. Disponível em: https://e-journal.unmas.ac.id/index.php/baktisaraswati/article/view/2082. Acesso em: 18 may. 2025.