ASSISTANT. PROF. DR. KHALED SHAKER MAHMOUD. ANXIETY AND ITS RELATIONSHIP TO THE PERFORMANCE OF DIRECTED VOLLEYBALL SERVE ACCORDING TO DIFFERENT PERFORMANCE METHODS. American Journal of Pedagogical and Educational Research, [S. l.], v. 16, p. 87–100, 2023. Disponível em: https://americanjournal.org/index.php/ajper/article/view/1238. Acesso em: 13 nov. 2024.