KAMID, K.; SABIL, H.; SYAFMEN, W.; TRIANI, E. A Study of Problem Based Learning and Mathematics Process Skills in Elementary School. Jurnal Ilmiah Sekolah Dasar, [S. l.], v. 5, n. 2, p. 359–368, 2021. DOI: 10.23887/jisd.v5i2.37157. Disponível em: https://ejournal.undiksha.ac.id/index.php/JISD/article/view/37157. Acesso em: 5 may. 2024.