Ana, M.G. et al. 2023. The Effect of Hitting Ball Practice on the Ability of Jump Service Athletes of Men Excludes of Xaverius 3 Palembang High School. Journal of Social Work and Science Education. 4, 3 (Jun. 2023), 477–482. DOI:https://doi.org/10.52690/jswse.v4i3.580.