NINGSIH, S. B. H.; SUDRAJAT, A. Analysis And Design Of Web-Based Sales Administration Information System Using Prototype Method. J-Sin’s - Jurnal Sistem Informasi, [S. l.], v. 5, n. 2, 2021. Disponível em: https://journal.unsap.ac.id/index.php/jsins/article/view/400. Acesso em: 18 sep. 2025.