Ramadhan, Kurnain Arsyi, and Humisar Hasugian. “TEORI DAN IMPLEMENTASI SISTEM INFORMASI HELPDESK BERBASIS WEB”. IDEALIS : InDonEsiA JournaL Information System, vol. 1, no. 1, Mar. 2018, pp. 185-9, https://jom.fti.budiluhur.ac.id/IDEALIS/article/view/1194.