Rajasa, M. Bintang, Jujur Gunawan Manullang, and Siti Ayu Risma Putri. “The Effect of Ladder Drill and Zig-Zag Exercises on Footwork Agility in Badminton Players PB. Dahlia Pagaralam”. Jp.jok (Jurnal Pendidikan Jasmani, Olahraga dan Kesehatan) 8, no. 2 (May 18, 2025): 139–147. Accessed April 13, 2026. https://ejurnal.uibu.ac.id/index.php/jp/article/view/1736.