Mi-suk Kim, and Jeon, Sang-wan Jeon. “Operation and Achievements of Permanent Referee System in Korea for Establishment of Fairness in Korean Sports Referee Culture”. Elementary Education Online 20, no. 3 (December 15, 2023): 1127–1135. Accessed November 5, 2024. https://ilkogretim-online.org./index.php/pub/article/view/1982.