Ferdika, M., & Kuswara, H. (2017). Sistem Informasi Penjualan Berbasis Web Pada PT Era Makmur Cahaya Damai Bekasi. INFORMATION SYSTEM FOR EDUCATORS AND PROFESSIONALS : Journal Of Information System, 1(2), 175 – 188. Retrieved from http://ejournal-binainsani.ac.id/index.php/ISBI/article/view/390