Tiara, M. S., and R. . Septiyanti. “Perancangan Sistem Informasi Helpdesk Operator Personal Assitance (OPA) PAMA Pada PT. Pamapersada Nusantara Distrik MTBU”. Prosiding Seminar Nasional Teknologi Komputer Dan Sains, vol. 1, no. 1, Nov. 2023, pp. 47 -56, https://sainteks.seminars.id/prosainteks/article/view/34.