Chercules, Ismet, and Ida Sriyanti. “Development of Electronic Books Using Website 2 APK Builder Pro Based on Science, Technology, Engineering, and Mathematics (STEM) to Improve Learning Outcomes ”. Jurnal Penelitian Pendidikan IPA 9, no. 11 (November 25, 2023): 9381–9390. Accessed April 23, 2025. https://jppipa.unram.ac.id/index.php/jppipa/article/view/5182.