Bahrudin, Ryan Muhammad, Mohammad Ridwan, and Hardjito S Darmojo. “Penerapan Helpdesk Ticketing System Dalam Penanganan Keluhan Penggunaan Sistem Informasi Berbasis Web”. JURNAL TEKNIK INFORMATIKA UNIS 7, no. 1 (February 20, 2020): 71–82. Accessed February 4, 2026. http://www.ejournal.unis.ac.id/index.php/jutis/article/view/147.