Diena Dwidienawati , Sri Bramantoro Abdinagoro , Dyah Gandasari. “Online Activities in Indonesia Young Generation: The Raise of Mobile Phone Usage ”. International Journal of Advanced Science and Technology, Vol. 29, no. 10s, May 2020, pp. 188 -96, http://sersc.org/journals/index.php/IJAST/article/view/14404.