Rahmadani, Dewi. “Simulasi Pelayanan Kasir Swalayan Citra Di Bandar Buat, Padang”. Jurnal Optimasi Sistem Industri 9, no. 1 (April 1, 2010): 19–24. Accessed May 9, 2024. https://josi.ft.unand.ac.id/index.php/josi/article/view/136.