Kezaldo, and Muchlisin Syahri. “Sistem Informasi Monitoring Helpdesk Pada PT. Krama Yudha Ratu Motor Dengan Metode Waterfall”. JUPITER : Journal of Computer & Information Technology 2, no. 1 (February 1, 2021): 63–77. Accessed July 26, 2025. https://ojs.ibm.ac.id/index.php/jupiter/article/view/41.