Siallagan T, Heryanto H. Peran Etika Kristen dalam Dunia Pendidikan Modern bagi Guru di Yayasan Methodist Berastagi. Jurnal Pengabdian Masyarakat Bangsa [Internet]. 2026 Aug. 10 [cited 2026 Aug. 10];4(6):2843-51. Available from: https://jurnalpengabdianmasyarakatbangsa.com/index.php/jpmba/article/view/4859