Rumbiak, Melanesia, 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 April 4, 2025. https://ejournals.umn.ac.id/index.php/SI/article/view/618.