Daniel, Gilberth, Ika Fajri, and Yoga Prisyanto. “Implementasi Sistem Informasi Berbasis Website Pada Gereja Ichtus Puildon Menggunakan Metode Waterfall”. Journal of Information System Research (JOSH) 6, no. 2 (January 31, 2025): 1329−1336. Accessed April 25, 2025. https://ejurnal.seminar-id.com/index.php/josh/article/view/6671.