Akbari, M., Dlis, F. and Widiastuti, W. (2018) “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, 4(1), pp. 57–64. doi: 10.21009/JIPES.041.05.