Yongpittayapong, P., J. Rattanakosoom, P. Rattanarama, P. Suepsri, R. Chaola, and W. Juldalai. “A Study of Ethnics Identity to Promote Tourism in SANUK Provincial”. Journal of Roi Et Rajabhat University, vol. 16, no. 3, Dec. 2022, pp. 236-49, https://so03.tci-thaijo.org/index.php/reru/article/view/253143.