Akbari, M. et al. 2017. THE EFFECT AT MUSCLE POWER ARM, HAND-EYE COORDINATION, FLEXIBILITY AND SELF CONFIDENCE UPON BADMINTON SMASH SKILL. JIPES - JOURNAL OF INDONESIAN PHYSICAL EDUCATION AND SPORT. 3, 2 (Dec. 2017), 84–94. DOI:https://doi.org/10.21009/JIPES.032.07.