PENERAPAN MODEL PEMBELAJARAN PROBLEM BASED LEARNING DALAM MENINGKATKAN HASIL BELAJAR SISWA KELAS IX DI SMP NEGERI 4 TOLITOLI. Literacy: Jurnal Pendidikan Ekonomi, [S. l.], v. 4, n. 1s, p. 135 144, 2025. DOI: 10.53682/jpeunima.v4i1s.8163. Disponível em: https://ejurnal.unima.ac.id/index.php/jpe-unima/article/view/8163. Acesso em: 9 may. 2026.