“Influence Of Shadow And Shuttle Run Exercises On Badminton Sports Footwork Aged 13 - 15 Years At Pb Jaya Raya Jakarta”. Journal Coaching Education Sports 3, no. 1 (May 9, 2024): 57–68. Accessed September 3, 2024. https://ejurnal.ubharajaya.ac.id/index.php/JCESPORTS/article/view/1800.