Siangsai, Chalothorn. “THE MOTIVATION FOR EXERCISE OF PEOPLE IN PHETCHABUN PROVINCE WITH COVID-19 EPIDEMIC”. Journal of Sports Science and Health 24, no. 1 (April 30, 2023): 131–144. accessed September 19, 2026. https://he02.tci-thaijo.org/index.php/spsc_journal/article/view/262634.