Bismar, Ahmad Rum, Hikmad Hakim, and Nukhrawi Nawir. 2023. “Contribution of Arm Explosive Power and Backstroke Flexibility to Plate Serving Ability in Field Tennis Games”. Journal of Sport Education, Coaching, and Health (JOCCA) 4 (4):300-307. https://doi.org/10.35458/jc.v4i4.1827.