HARKNESS, A. . Faktor Ouch: Pelayanan Anak bagi Umat Allah. Jurnal Amanat Agung, [S. l.], v. 5, n. 1, p. 147–156, 2009. Disponível em: http://165.22.100.199/index.php/JAA/article/view/23. Acesso em: 7 feb. 2026.