INTHAPAT, T., Prachakul, W., & PHIMPHAPHORN, P. (2019). A STUDY OF FLOW STATE, SELF CONFIDENCE AND STATE ANXIETY ON PROFESSIONAL PLAYERS IN VOLLEYBALL THAILAND LEAGUE. Journal of Sports Science and Technology, 19(2), 32–45. retrieved from https://he01.tci-thaijo.org/index.php/JSST/article/view/192079