FITRIA; NOFRIYANDI; SURIPAH; STHEPHANI, Aulia. Perangkat pembelajaran matematika berbasis problem-based learning pada materi sistem persamaan linear tiga variabel. Jurnal Inovasi Pembelajaran Matematika: PowerMathEdu, [S. l.], v. 2, n. 1, p. 93–102, 2023. DOI: 10.31980/pme.v2i1.1403. Disponível em: https://journal.institutpendidikan.ac.id/index.php/pme/article/view/1403. Acesso em: 3 aug. 2025.