NGGEBU, Sostenis. Guru agama Kristen Sebagai Teolog Praktika Garis Depan Bagi Siswa. Didache: Journal of Christian Education, Ungaran, Indonesia, v. 3, n. 1, p. 1–20, 2022. DOI: 10.46445/djce.v3i1.495. Disponível em: https://journal.sttsimpson.ac.id/index.php/DJCE/article/view/495. Acesso em: 9 may. 2026.