Srisawad, P., and T. Ounvichit. “Innovating a constructivist learning model to instill cultural diversity respect into youths in a Thai tourism community”. Kasetsart Journal of Social Sciences, vol. 37, no. 2, June 2016, pp. 88-92, https://so04.tci-thaijo.org/index.php/kjss/article/view/242844.