HAMZAH. KONTRIBUSI KELENTUKAN PERGELANGAN TANGAN TERHADAP KETERAMPILAN SERVIS BACKHAND BULUTANGKIS ATLET KLUB PB. GARUDA. JOI [Internet]. 2020 Oct. 21 [cited 2024 Nov. 23];4(1):171-86. Available from: https://ejournal-fkip.unisi.ac.id/joi/article/view/1411