HADI HARTONO; SINAGA, R. M.; PUJIATI. Effectiveness of Controversial Issues Learning Model Through Problem Based Learning in Improving Students Critical Thinking Skills. International Journal of Educational and Life Sciences, [S. l.], v. 2, n. 1, p. 51–68, 2024. DOI: 10.59890/ijels.v2i1.1168. Disponível em: https://journal.multitechpublisher.com/index.php/ijels/article/view/1168. Acesso em: 27 may. 2026.