NINGSIH, S. B. H. SMS Gateway-Based Value Information System at State Junior High School 4 Situraja. J-Sin’s - Jurnal Sistem Informasi, [S. l.], v. 2, n. 1, 2021. Disponível em: https://journal.unsap.ac.id/index.php/jsins/article/view/248. Acesso em: 7 jul. 2025.