SARI, Intan Kartika. The effect of problem-based learning and project-based learning on the achievement motivation. Jurnal Prima Edukasia, [S. l.], v. 6, n. 2, p. 129–135, 2018. DOI: 10.21831/jpe.v6i2.17956. Disponível em: https://journal.uny.ac.id/index.php/jpe/article/view/17956. Acesso em: 5 may. 2025.