MUSTHOFA, S.; PRASETYO, K.; PURNOMO, N. H. Problem-Based Learning Effects on Students Learning Outcomes in the Themes of The Potential and Utilization of Natural Resources. The Indonesian Journal of Social Studies, [S. l.], v. 2, n. 2, p. 95–101, 2019. DOI: 10.26740/ijss.v2n2.p95-101. Disponível em: https://journal.unesa.ac.id/index.php/jpips/article/view/5291. Acesso em: 29 apr. 2024.