Maruloh, Maruloh, and Irna Prima Sari. “Penerapan Model Waterfall Pada Sistem Informasi Pembayaran SPP Dan Pengisian Rapor SMK Muhammadiyah 13”. Reputasi: Jurnal Rekayasa Perangkat Lunak 4, no. 2 (December 7, 2023): 89-95. Accessed May 17, 2024. http://jurnal.bsi.ac.id/index.php/reputasi/article/view/2416.