Awaludin, Awaludin, Basuki Wibawa, and Murni Winarsih. “The Development of Hypermedia Based E-Book for Integral Calculus Subject”. International Journal of Online and Biomedical Engineering (iJOE) 16, no. 04 (April 8, 2020): pp. 109–127. Accessed November 29, 2024. https://online-journals.org/index.php/i-joe/article/view/13393.