HAIKAL, Muhammad; AKBAR, Nai’mul. Visitor Service Application Using Waterfall method. Journal of Computer Science and Informatics Engineering , [S. l.], v. 2, n. 3, p. 116–123, 2023. DOI: 10.55537/cosie.v2i3.185. Disponível em: https://journal.aira.or.id/index.php/cosie/article/view/185. Acesso em: 4 aug. 2025.