MOHAMMED, Mohammed Munther; NASER, Mudher Ali. Psychological Expenditure and its Relationship to the Serving Skills of Specialized Volleyball Players. Pubmedia Jurnal Pendidikan Olahraga, [S. l.], v. 3, n. 1, p. 11, 2025. DOI: 10.47134/jpo.v3i1.2126. Disponível em: https://edu.pubmedia.id/index.php/jpo/article/view/2126. Acesso em: 8 jun. 2026.