Johan Hartama Forisa Sianturi, & Sri Setya Handayani. 2022. “THE EFFECT OF WHATSAPP COMMUNICATION MEDIA AND DISCIPLINE ON THE EFFECTIVENESS OF WARRIOR’S PERFORMANCE IN SUPPORTING TASKS IN YONZIKON 13 / KE”. International Journal of Research Science and Management 9 (9):1-10. http://ijrsm.com/index.php/journal-ijrsm/article/view/15.