ปัญโญ กรัณย์. “Effects of Circuit Training Program on the Development of Biomotor Ability of Chiang Mai University Personnel Athletes”. Academic Journal of Thailand National Sports University 3, no. 2 (May 2, 2011): 113–128. accessed December 6, 2025. https://he02.tci-thaijo.org/index.php/TNSUJournal/article/view/252316.