Albert Miliano, Ignatius Steven, Zahid Abdurrahman Wirahaditenaya, Emil R. Kaburuan, Gunawan Wang, Sfenrianto. (2020). Design Concept of Loyalty Program for E-Payment Method. International Journal of Control and Automation, 13(4), 290 - 297. Retrieved from http://sersc.org/journals/index.php/IJCA/article/view/16371