BUSNAWIR, B.; YUNIAWATI, I.; MARDIATI, M.; SITEPU, E. . The effectiveness of project-based learning in developing the 21st century skills. Darussalam: Journal of Psychology and Educational, [S. l.], v. 4, n. 1, p. 35–50, 2025. DOI: 10.70363/djpe.v4i1.272. Disponível em: http://journal.minangdarussalam.or.id/index.php/djpe/article/view/272. Acesso em: 5 jul. 2025.