Sihombing, Aeron Frior. “PENDIDIKAN KARAKTER DALAM KOTBAH DI BUKIT”. Regula Fidei : Jurnal Pendidikan Agama Kristen 4, no. 1 (January 22, 2020): 38–56. Accessed February 20, 2026. https://www.christianeducation.id/e-journal/index.php/regulafidei/article/view/31.