Sitorus EL, Munthe B, Bangun B. IMPLEMENTATION OF THE PROBLEM BASED LEARNING MODEL IN INCREASING STUDENT CREATIVITY IN PAK LEARNING IN CLASS XI PRIVATE HIGH SCHOOL HKBP SIDORAME MEDAN. JRPP [Internet]. 2023 Sep. 17 [cited 2025 Dec. 14];6(3):459-68. Available from: https://journal.universitaspahlawan.ac.id/index.php/jrpp/article/view/19039