Pahlevi, Reynald Daffa, and Harry Budi Santoso. “A Usability Evaluation of an E-Commerce Checkout System Using SUS and Usability Testing”. International Journal of Advances in Data and Information Systems 7, no. 1 (March 30, 2026): 160–173. Accessed October 12, 2026. https://mail.ijadis.org/index.php/ijadis/article/view/1498.