Thongjamroon, N. . ., Charoenrak, S., Senamitr , P. ., Auppthak , W. ., Inrissapong , S. . and Sangkhaduang, T. (2024) “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, 13(2), pp. 106–117. available at: https://so05.tci-thaijo.org/index.php/SocialJournal2rmutto/article/view/268647 (accessed: 26 April 2025).