EBRU ŞENEL; BURKAY CEVAHIRCIOĞLU. Investigation of the Relationship between Novel Coronavirus (COVID-19) Anxiety and Mental Toughness in Professional Volleyball Players. Journal of Educational Issues, [S. l.], v. 8, n. 1, p. pp. 643–663, 2024. DOI: 10.5296/jei.v8i1.19864. Disponível em: https://macrojournal.org/index.php/jei/article/view/1470. Acesso em: 5 oct. 2024.