Syafii, M, Alan Alfiansyah Putra Karo-Karo, Liliana Puspa Sari, Rinaldi Aditya, Boby Helmi, and Benny Aprial Simangunsong. “Development of Soft Takraw Balls for Children”. Jurnal Keolahragaan 10, no. 2 (September 26, 2022): 239–246. Accessed June 8, 2025. https://jurnal.uny.ac.id/index.php/jolahraga/article/view/49935.