Salam S, Firman F, Mirnawati M. How to Improve Learning Outcomes of the Indonesian Language in Elementary Schools through the Implementation of Problem-Based Learning Methods. PiJIES [Internet]. 2022 Apr. 30 [cited 2024 Jul. 22];5(1):131-44. Available from: http://ejournal.iainpalopo.ac.id/index.php/PiJIES/article/view/2736