Ali, M., Mulyana, M., & Firmansyah, F. (2017). INFLUENCE OF MUSCLE SLEEVE STRENGTH, TOGOK FORMATION, EYE COORDINATION AND SELF-CONFIDENCE IN SERVICE SKILLSTENNIS COURT. JIPES - JOURNAL OF INDONESIAN PHYSICAL EDUCATION AND SPORT, 3(2), 17–33. https://doi.org/10.21009/JIPES.032.02