CINTYA, C. .; SIAHAAN, R. . Implementation of the Client-Server System for Ordering Food and Beverages with the Android Platform Using the Waterfall Method (Case Study: Maxx Coffee Prima Ap Kualanamu Store). Journal of Intelligent Decision Support System (IDSS), [S. l.], v. 3, n. 3, p. 31-39, 2020. Disponível em: https://www.idss.iocspublisher.org/index.php/jidss/article/view/13. Acesso em: 7 jul. 2026.