et. al., P. W. D. (Kleebmuang),. “Model and Activity Development in Adult Health Promotion Foundation, the Adult Health Learning Center, Wat Santiwiwek Takian Sub – District, Kabcherng District, Surin Province”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 8, Apr. 2021, pp. 2488-91, https://turcomat.org/index.php/turkbilmat/article/view/3765.