Hariyanto, Didik, and Thomas Köhler. “A Web-Based Adaptive E-Learning Application for Engineering Students: An Expert-Based Evaluation”. International Journal of Engineering Pedagogy (iJEP) 10, no. 2 (March 11, 2020): pp. 60–71. Accessed November 24, 2024. https://online-journals.org/index.php/i-jep/article/view/11834.