SIMANULLANG, R. H. PENGETAHUAN IBU TENTANG KARIES GIGI PADA ANAK DI SEKOLAH DASAR HELVETIA MEDAN. JURNAL ONLINE KEPERAWATAN INDONESIA, [S. l.], v. 1, n. 2, p. 47–56, 2019. Disponível em: https://e-journal.sari-mutiara.ac.id/index.php/Keperawatan/article/view/427. Acesso em: 4 dec. 2024.