สุขเกษมมณีรัตน์, and กาฬสมุทร์นุชเนตร. “The Sustainable Creative Tourism Management: World Heritage Site-Cultural Heritage Alive: A Case Study of Historical Town of Sukhothai and Associated Historic Towns”. RMUTI JOURNAL Humanities and Social Sciences 5, no. 1 (June 28, 2017): 160-178. Accessed September 19, 2020. https://so05.tci-thaijo.org/index.php/RMUTI_SS/article/view/189670.