PURNOMO, W.; GUILIN, X.; PUTRI, L. R. The Effectiveness of Project-Based Learning in Improving Collaborative Skills of Elementary School Students. International Journal of Educatio Elementaria and Psychologia, [S. l.], v. 1, n. 6, p. 294–304, 2024. DOI: 10.70177/ijeep.v1i6.1383. Disponível em: https://journal.ypidathu.or.id/index.php/ijeep/article/view/1383. Acesso em: 2 jul. 2025.