NURRAHMAN, Taufik; ALUWIS, Aluwis; PRAWIBOWO, Muhammad. Analysis of Underhand Serve Ability in Volleyball Game Among Extra-Curricular Students at Bahrul Ulum Islamic Boarding School, Pasir Utama, Rokan Hulu Regency. Jurnal Ilmu Keolahragaan, [S. l.], v. 1, n. 2, p. 19–27, 2026. DOI: 10.65943/jikor.2026.v1.i2.69. Disponível em: https://ojs.ucp.ac.id/index.php/JIKor/article/view/69. Acesso em: 1 apr. 2026.