Yunita, Lia. “EFEKTIVITAS PROBLEM BASED LEARNING BERBANTUAN E-LEARNING UNTUK MENINGKATKAN PRESTASI BELAJAR”. Education Journal : Journal Educational Research and Development 1, no. 1 (February 21, 2017): 1–8. Accessed March 10, 2025. https://jurnal.unipar.ac.id/index.php/ej/article/view/91.