Punyasri, P. ., S. . Thaotho, A. . Lordkaew, K. . Nakphalad, and P. . Jedaman. “Strategies Development to Social Skills and Practices of Elderly on Health and Cultural Tourism in Learning Society”. Journal of Modern Learning Development, vol. 6, no. 5, June 2021, pp. 84-99, https://so06.tci-thaijo.org/index.php/jomld/article/view/249528.