hendra, hendra 2023. The Contribution of Wrist Flexibility to Smash Accuracy in Volleyball Games Rajawali Club Athletes, Pelangiran District Indragiri Hilir Regency. JOI (Jurnal Olahraga Indragiri): Olahraga, Pendidikan , Kesehatan, Rekreasi. 7, 1 (Apr. 2023), 26–32. DOI:https://doi.org/10.61672/joi.v7i1.2616.