Print and Photocopy Service System Design Using Mobile Based Waterfall Method. Bangka Information Technology Journal, [S. l.], v. 1, n. 1, p. 1–9, 2024. DOI: 10.33019/5b21yb67. Disponível em: https://bitjournal.ubb.ac.id/index.php/bitjournal/article/view/6.. Acesso em: 13 oct. 2025.