Praptiningsih, Yulia Eka, Winda Widya Ariestya, and Nurkhamid Mustaufa. “PERANCANGAN SISTEM PENJUALAN PULSA”. Jurnal Ilmiah FIFO 8, no. 2 (November 1, 2016): 127–138. Accessed May 28, 2026. https://training-ojs3-publikasi.mercubuana.ac.id/index.php/fifo/article/view/1307.