Phunorn, Krittrin, and Rojapon Buranarugsa. “DEVELOPMENT OF BADMINTON BASIC SKILLS DEVICE TESTING BY USING ELECTRONIC SYSTEM FOR GRADE 9 STUDENTS OF BAN KHANUN SCHOOL NONG NA KHAM DISTRICT KHON KAEN PROVINCE”. Journal of Innovation and Learning Sciences 14, no. 2 (December 24, 2020): 1–15. accessed September 11, 2026. https://so02.tci-thaijo.org/index.php/EDGKKUJ/article/view/241576.