srirungrangchai, krit, N. MAKAJE, P. PHIMPHAPHORN, and R. REUNGTHAI. “The EFFECT OF INCREASING NUMBER OF BALL ON PHYSIOLOGICAL RESPONSE, MOVEMENT DEMAND AND TECHNICAL SKILL DURING SMALL SIDE SOCCER GAME TRAINING”. Journal of Sports Science and Technology, vol. 18, no. 2, Dec. 2018, pp. 35-47, https://he01.tci-thaijo.org/index.php/JSST/article/view/125429.