Najaf, Abdul Rezha, Reisa Permatasari, and Ciptagusti Sakti. “Evaluating the Usability of a Book Stock and Sales Recording Android App: System Usability Scale (SUS), Heuristic Evaluation, and Maze Tool Insights”. Journal of Information Systems and Informatics 6, no. 3 (September 18, 2024): 1774-1789. Accessed December 19, 2025. https://journal-isi.org.adsii.or.id/index.php/isi/article/view/829.