MARVIAN DWI HARJANTO; GATOT JARIONO. Method of Strengthening Arm Muscles Against the Ability of the Tennis Flat Service Stroke (Experimental Study in Students of Muhammadiyah University of Surakarta). International Journal of Educational Research & Social Sciences , [S. l.], v. 2, n. 4, p. 743–750, 2021. DOI: 10.51601/ijersc.v2i4.142. Disponível em: https://ijersc.org/index.php/go/article/view/142. Acesso em: 7 nov. 2024.