SIALLAGAN, T.; HERYANTO, H. Peran Etika Kristen dalam Dunia Pendidikan Modern bagi Guru di Yayasan Methodist Berastagi. Jurnal Pengabdian Masyarakat Bangsa, [S. l.], v. 4, n. 6, p. 2843–2851, 2026. DOI: 10.59837/jpmba.v4i6.4859. Disponível em: https://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/4859. Acesso em: 10 aug. 2026.