Bahtra, R., D. Tohidin, Y. Andria, W. W. Dinata, and N. Susanto. “Small-Sided Games 5v5: Improving Aerobic Endurance of Youth Football Players”. Physical Education Theory and Methodology, vol. 23, no. 5, Oct. 2023, pp. 739-46, doi:10.17309/tmfv.2023.5.12.