Yuliyanto, Aan, Dinta Hayulistya Praba Eriesta, and Susi Setyowati. “GASING Method to Improve Basic Calculation of Multiplication in Mathematics for Third-Grade Elementary School”. Jurnal Pembangunan Pendidikan: Fondasi dan Aplikasi 11, no. 1 (April 5, 2024): 90–102. Accessed May 15, 2025. https://jurnal.uny.ac.id/index.php/jppfa/article/view/66128.