PRAMESTIKA, N. P. D.; WULANDARI, I. G. A. A.; SUJANA, I. W. Enhancement of Mathematics Critical Thinking Skills through Problem Based Learning Assisted with Concrete Media. Journal of Education Technology, [S. l.], v. 4, n. 3, p. 254–263, 2020. DOI: 10.23887/jet.v4i3.25552. Disponível em: https://ejournal.undiksha.ac.id/index.php/JET/article/view/25552. Acesso em: 7 may. 2024.