Rumbiak MN, Setiawan J. Evaluasi Usability Website library.umn.ac.id Universitas Multimedia Nusantara. ULTIMA InfoSys [Internet]. 2017 Dec. 31 [cited 2025 Aug. 1];8(2):87-94. Available from: https://ejournals.umn.ac.id/index.php/SI/article/view/618