Akbari, M., F. Dlis, and W. Widiastuti. “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, Vol. 4, no. 1, July 2018, pp. 57-64, doi:10.21009/JIPES.041.05.