Rahmansyah, A.A. and Hutajulu, P.E. 2021. Sistem Ujian Online Essay Kolektif Berbasis Gambar Studi Kasus Kampus PTKI Medan. JURNAL MEDIA INFORMATIKA BUDIDARMA. 5, 3 (Jul. 2021), 1073–1083. DOI:https://doi.org/10.30865/mib.v5i3.3029.