Research Trends in Problem Based Learning in Middle School (1998-2023): A Bibliometric Review. Jurnal Sustainable, [S. l.], v. 6, n. 1, p. 46–58, 2023. DOI: 10.32923/kjmp.v6i1.3237. Disponível em: https://rumahjurnal.iainsasbabel.ac.id/sus/article/view/3237. Acesso em: 14 nov. 2025.