Febrialis, W., and M. Rifki. “PENGARUH METODE DRILLS FOR GAME-LIKE SITUATION TERHADAP KEMAMPUAN SERVIS ATAS BOLAVOLI PUTRA KLUB SEMEN PADANG”. JURNAL STAMINA, Vol. 2, no. 11, Nov. 2019, pp. 28-35, http://stamina.ppj.unp.ac.id/index.php/JST/article/view/420.