Yanto, A., and E. Barlian. “PENGARUH DAYA LEDAK OTOT TUNGKAI, DAYA LEDAK OTOT LENGAN DAN PERCAYA DIRI TERHADAP KEMAMPUAN SMASH ATLET BOLAVOLI KLUB SURYA BAKTI PADANG”. Journal Of Dehasen Educational Review, Vol. 1, no. 2, July 2020, pp. 65-71, https://jurnal.unived.ac.id/index.php/jder/article/view/1037.