PUNIA, I. W. Peningkatan Hasil Belajar Matematika melalui Penerapan Model Pembelajaran Problem Based Learning (PBL). Journal of Education Action Research, [S. l.], v. 4, n. 3, p. 354–362, 2020. DOI: 10.23887/jear.v4i3.27240. Disponível em: https://ejournal.undiksha.ac.id/index.php/JEAR/article/view/27240. Acesso em: 27 apr. 2024.