Apriantono, T., A. D. Juniarsyah, I. K. Adnyana, M. F. Hasan, and D. Resmana. “The Effect of Speed Training on the Physical Performance of Adolescent Futsal Players”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, Vol. 9, no. 1, Apr. 2023, pp. 172-84, doi:10.29407/js_unpgri.v9i1.19047.