HAFIDZ, Khairul; IKHWAN, Ali. The Android-Based Cashier Service Information System Utilizes the Waterfall Method. Journal of Information Systems and Informatics, [S. l.], v. 6, n. 2, p. 959–978, 2024. DOI: 10.51519/journalisi.v6i2.748. Disponível em: https://journal-isi.org/index.php/isi/article/view/748. Acesso em: 7 mar. 2026.