1.
Purba FJ. INFLUENCE MODEL PROBLEM BASED LEARNING (PBL) UNDERSTANDING THE CONCEPT OF BEGINNING OF SCIENCE PROCESS SKILL (KPS) SENIOR HIGH SCHOOL STUDENT. JPF Unimed [Internet]. 2015 Dec. 1 [cited 2025 Jul. 16];4(2):8-13. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/3191