Pignuch, A., and S. Sinjindawong. “A Development of Exercise Program for Elderly Person At Loet Ubon Village Community”. Journal of Humanities and Social Sciences, Rajapruk University, vol. 7, no. 3, Dec. 2021, pp. 178-92, https://so03.tci-thaijo.org/index.php/rpu/article/view/257349.