Irvan. “The Effect of Plyometric Training on the Change of Direction Ability of FIKK UNM Squash Players”. Journal Physical Health Recreation (JPHR) 5, no. 4 (September 15, 2025): 661-668. Accessed April 26, 2026. https://jurnal.stokbinaguna.ac.id/index.php/JPHR/article/view/4129.