ADAM, S.; MAGFIRAH, S. . Implementation of Problem-Based Learning Model in TOEFL Preparation Program at Khairun University. ELS Journal on Interdisciplinary Studies in Humanities, [S. l.], v. 4, n. 4, p. 424-430, 2021. DOI: 10.34050/elsjish.v4i4.18611. Disponível em: https://journal.unhas.ac.id/index.php/jish/article/view/18611. Acesso em: 21 jul. 2024.