SIMANUNGKALIT, Aprianus. Dasar Pelayanan Kristen Bagi Penyandang Tunagrahita. PNEUMATIKOS: Jurnal Teologi Kependetaan, [S. l.], v. 11, n. 1, p. 16–27, 2020. DOI: 10.56438/pneuma.v11i1.21. Disponível em: https://e-journal.stapin.ac.id/index.php/pneumatikos/article/view/21. Acesso em: 4 nov. 2026.