SIRAIT, H.; LUMBAN RAJA, H. d. . . Incoming And Outgoing Mail Filing Information System Using The View Controller Model At College Institutions. Jurnal Mantik, [S. l.], v. 5, n. 3, p. 1625-1635, 2021. Disponível em: https://iocscience.org/ejournal/index.php/mantik/article/view/1559. Acesso em: 12 sep. 2026.