Riyanto, Riyanto, Mohamad Amin, Hadi Suwono, and Umie Lestari. “The New Face of Digital Books in Genetic Learning: A Preliminary Development Study for Students’ Critical Thinking”. International Journal of Emerging Technologies in Learning (iJET) 15, no. 10 (June 1, 2020): pp. 175–190. Accessed May 6, 2024. https://online-journals.org/index.php/i-jet/article/view/14321.