Isik, Ozkan, and Huseyin Gumus. “Evaluation of Effective Demographic Variables in Competition Performances of Turkish Wrestling Referees”. Journal of Human Sport and Exercise 13, no. 1 (March 20, 2018): 60–71. Accessed April 26, 2024. https://www.jhse.ua.es/article/view/2018-v13-n1-effective-demographic-variables-competition-performa.