WIGUNA, S. MENINGKATKAN KETERAMPILAN SERVIS ATAS BOLA VOLI MELALUI MODIFIKASI PERMAINAN. Jurnal Speed (Sport, Physical Education, Empowerment), [S. l.], v. 1, n. 2, p. 62–69, 2018. DOI: 10.35706/speed.v1i2.1734. Disponível em: https://journal.unsika.ac.id/index.php/speed/article/view/1734. Acesso em: 4 may. 2024.