Anam, K., S. Sumartiningsih, D. Fajar Widya Permana, R. Nurfadhila, and E. Ayu Aditia. “FIFA 11+ Kids Can Increase Muscle Strength: A 12 Weeks Treatment”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran, Vol. 8, no. 2, Aug. 2022, pp. 189 -00, doi:10.29407/js_unpgri.v8i2.18059.