SIMANULLANG, G. SPIRITUALITAS CIPTAAN DAN HIDUP UGAHARI. LOGOS, [S. l.], v. 2, n. 1, p. 26–48, 2019. Disponível em: https://ejournal.ust.ac.id/index.php/LOGOS/article/view/347. Acesso em: 3 jul. 2024.