Linek, Stephanie Bettina, and Klaus Tochtermann. “Assessment of Usability Benchmarks: Combining Standardized Scales With Specific Questions”. International Journal of Emerging Technologies in Learning (iJET) 6, no. 4 (November 25, 2011): pp. 56–64. Accessed May 3, 2024. https://online-journals.org/index.php/i-jet/article/view/1832.