Karepesina NG, Manuhutu JB. Application of Problem-Based Learning (PBL) on Hydrocarbon Compound Lesson to Increase Student Learning Outcomes. HJKK [Internet]. 2023 Feb. 15 [cited 2025 Sep. 30];11(1):51-9. Available from: https://ojspanel.undikma.ac.id/index.php/hydrogen/article/view/6961