Fatchurrahman, Faried, Andun Sudijandoko, and Achmad Widodo. “The Comparison of the Effect of Ladder Drills in Out Training and Ladder Drills Ickey Shuffle Exercises on Increasing Speed and Agility”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 5, no. 1 (May 29, 2019): 154 - 165. Accessed April 19, 2024. https://ojs.unpkediri.ac.id/index.php/pjk/article/view/12753.