Riskha, Oktavia, and Arif Wicaksono. “The Role of Christian Education Teachers in Building Students’ Positive Self-Concept”. TEVUNAH: Jurnal Teologi dan Pendidikan Kristen 2, no. 1 (May 22, 2024): 83–102. Accessed February 2, 2026. https://jurnal.stak-luwukbanggai.ac.id/index.php/jt/article/view/15.