et. al., D. C. “The Image of Historical Tourism in the Area of the Ayutthaya Historical Park Affecting the Decision to Visit of Thai Tourists in Phra Nakhon Si Ayutthaya”. Turkish Journal of Computer and Mathematics Education (TURCOMAT), vol. 12, no. 8, Apr. 2021, pp. 2414-9, https://turcomat.org/index.php/turkbilmat/article/view/3744.