DESTIANA BR PANJAITAN; TUMPAL MANAHARA SIAHAAN; ANTON LUVI SIAHAAN. The Impact of Problem Based Learning Model for the Result of Social Subject Grade VIII in SMP Cinta Rakyat 3 Pematang Siantar Year 2022/2023. International Journal of Integrated Science and Technology, [S. l.], v. 1, n. 5, p. 803–816, 2023. DOI: 10.59890/ijist.v1i5.781. Disponível em: https://journal.multitechpublisher.com/index.php/ijist/article/view/781. Acesso em: 10 apr. 2026.