Kusuma, Wanto Wijaya, and Hafifi Hafifi. “Meningkatkan Prestasi Dan Motivasi Belajar Melalui Model Pembelajaran Problem Based Learning (PBL) Dalam Pelajaran Ekonomi”. Jurnal Inovasi Pendidikan MH Thamrin 5, no. 2 (January 24, 2022): 19–27. Accessed July 3, 2024. https://journal.thamrin.ac.id/index.php/jipmht/article/view/667.