NISA, E. K.; WULANDARI, F. Pengaruh Model Problem Based Learning terhadap Self-Confident dan Hasil Belajar Siswa: The Effect of Problem Based Learning Model on Self-Confident and Student Learning Outcomes. Proceedings of The ICECRS, [S. l.], v. 2, n. 1, p. 195–202, 2019. DOI: 10.21070/picecrs.v2i1.2387. Disponível em: https://icecrs.umsida.ac.id/index.php/icecrs/article/view/1390. Acesso em: 14 sep. 2025.