BATUBARA, Umar Said; NASUTION, Muhammad Irwan Padli. Immunization Servis Mobile Information System at Posyandu Medan Sunggal. Prisma Sains : Jurnal Pengkajian Ilmu dan Pembelajaran Matematika dan IPA IKIP Mataram, [S. l.], v. 11, n. 3, p. 653–659, 2023. DOI: 10.33394/j-ps.v11i3.8395. Disponível em: https://e-journal3.undikma.ac.id/index.php/prismasains/article/view/8395. Acesso em: 18 aug. 2025.