Siagian RM, Motlan M, Simanjuntak MP, Siagian CT. EFEK MODEL PROBLEM BASED LEARNING TERHADAP KETERAMPILAN PEMECAHAN MASALAH FISIKA SISWA. JPF Unimed [Internet]. 2024 Jun. 27 [cited 2025 Jul. 3];13(1):8-12. Available from: https://jurnal.unimed.ac.id/2012/index.php/jpf/article/view/21582