Satria, Satria Vannani Ardi. “The Effect of Ladder Drill Exercise on Increasing Agility of Futsal Players in Sports Coaching Education Students, Riau University”. Jurnal Inovasi Olahraga, vol. 2, no. 03, June 2023, pp. 197-06, https://doi.org/10.53905/jiojurnal.v2i03.43.