“Dampak Model Problem-Based Learning (PBL) Terhadap Self-Confidence: Studi Meta-Analisis”. Jurnal Ilmu Pendidikan Nasional (JIPNAS) 2, no. 2 (August 28, 2024): 70–76. Accessed March 12, 2025. https://jurnal.padangtekno.com/index.php/jipnas/article/view/458.