Chanpradit, Thaweesak. “The English Curriculum Development Process of the Cultural Tourism Communication Course for Elderly People: A Case Study of the Community of Doem Bang Nang Buat, Suphan Buri”. Journal of Humanities and Social Sciences Thonburi University 16, no. 1 (December 14, 2021): 25–33. Accessed May 4, 2024. https://so03.tci-thaijo.org/index.php/trujournal/article/view/250718.