ROLI MARTIN09.01.53.0151. “RANCANG BANGUN SISTEM PENGINGAT JADWAL PEMBAYARAN SPEEDY BERBASIS SMS GATEWAY”. Information Technology and Telematics 5, no. 1 (May 29, 2015). Accessed July 23, 2024. https://www.unisbank.ac.id/ojs/index.php/fti3/article/view/3138.