Mongkhonvanit, C., and R. Chattiwong. “Attitude and Behavior of Thai Youths Toward the World Cultural Heritage: The Case of Ayutthaya Historical Park”. Journal of Thai Hospitality and Tourism, vol. 10, no. 2, Jan. 2016, pp. 3-17, https://so04.tci-thaijo.org/index.php/tourismtaat/article/view/45398.