Murillo, Braulio, and Jose Pow-Sang. “A Systematic Mapping Review of Software Usability Metrics”. International Journal of Engineering and Technology 7, no. 3.13 (July 27, 2018): 72–75. Accessed August 17, 2025. https://mail.sciencepubco.com/index.php/IJET/article/view/16327.