IRAWATI, T. N. Developing Student Critical Thinking Ability by Using Problem Based Learning (PBL). Jurnal Axioma : Jurnal Matematika dan Pembelajaran, [S. l.], v. 3, n. 1, p. 51–59, 2018. Disponível em: https://ejurnal.uij.ac.id/index.php/AXI/article/view/309. Acesso em: 20 apr. 2024.