Sataroh, Sindy, and Novi Febrianti. “Development of Digital Biology Book on Antioxidant Activity of Red Dragon Fruit Extract (Hylocereus Polyrhizus) for Class XI High School Students”. Journal of Education and Learning Research 2, no. 1 (August 10, 2024): 10–18. Accessed July 12, 2026. https://jelr.greadc.org/index.php/jelr/article/view/31.