1.
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. IJIST [Internet]. 2023 Nov. 29 [cited 2026 Apr. 21];1(5):803-16. Available from: http://journal.multitechpublisher.com/index.php/ijist/article/view/781