Rumbiak, Melanesia N.W., and Johan Setiawan. “Evaluasi Usability Website library.umn.ac.Id Universitas Multimedia Nusantara”. Ultima InfoSys : Jurnal Ilmu Sistem Informasi 8, no. 2 (December 31, 2017): 87–94. Accessed January 8, 2026. https://ejournals.umn.ac.id/index.php/SI/article/view/618.