Thongjamroon, N., S. Charoenrak, P. Senamitr, W. Auppthak, S. Inrissapong, and T. Sangkhaduang. “Demographic characteristics and tourist behavior that influence the level of demand in purchasing environmentally friendly restaurant products within the marketing mix”. Rajamangala University of Technology Tawan-ok Social Science Journal, vol. 13, no. 2, Dec. 2024, pp. 106-17, https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/268647.