SIAHAAN, T. M.; SIMAMORA, R. Pengaruh Model Problem Based Learning Terhadap Kemampuan Penalaran Matematis Mahasiswa Universitas HKBP Nommensen Pematangsiantar: -. PENDIPA Journal of Science Education, [S. l.], v. 8, n. 1, p. 65–69, 2024. DOI: 10.33369/pendipa.8.1.65-69. Disponível em: https://ejournal.unib.ac.id/pendipa/article/view/33343. Acesso em: 11 feb. 2025.