AULIA RAMADANISTI; RICKY; ALWI FAHRUZY NASUTION. Improve Underhand Service Achievement In Volleyball Games With Rubber Ball Media. Journal Physical Health Recreation (JPHR), [S. l.], v. 3, n. 2, p. 105–110, 2023. DOI: 10.55081/jphr.v3i2.1081. Disponível em: https://jurnal.stokbinaguna.ac.id/index.php/JPHR/article/view/1081. Acesso em: 5 oct. 2026.