Syamsul Bakhri, Muhammad Fikri Arif. Penerapan Model Waterfall Pada Rancang Bangun Sistem Informasi Pengelolaan Surat Keterangan Usaha. SATIN [Internet]. 2021Dec.1 [cited 2024Sep.19];7(2):22-0. Available from: https://jurnal.usti.ac.id/index.php/satin/article/view/760