NUARTA, I. N. Meningkatkan prestasi belajar bahasa Inggris melalui penerapan model pembelajaran problem based learning. Indonesian Journal of Educational Development (IJED), [S. l.], v. 1, n. 2, p. 283–293, 2020. DOI: 10.5281/zenodo.4006057. Disponível em: https://ojs.mahadewa.ac.id/index.php/ijed/article/view/795. Acesso em: 11 oct. 2025.