Arnold S. Saputra, Yanditya E. Dwipada, Yoga A. Maulana, Emil R. Kaburuan*, Gunawan Wang. 2020. “The Effect of Online Gamification of Tutoring to Improve Student’s Achievement”. International Journal of Control and Automation 13 (02), 1151 -58. https://sersc.org/journals/index.php/IJCA/article/view/26900.