Singharatanasiri , Atika, and Thawatchai Kanchanathaweekul. “COMPETITIVE STATE ANXIETY AND MOTIVATIONAL CLIMATE IN THAI PROFESSIONAL FOOTBALL PLAYERS”. Academic Journal of Thailand National Sports University 11, no. 3 (September 1, 2019): 97–108. accessed September 18, 2026. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/244565.