Chaemchamrus, Kamtorn, Nanthannit Erb-im, Yanisa Phuanpoh, and Rudee Sermchayut. “Upgrading and Increasing Value of Souvenir Products of Tourist Attractions; Experience the Charm of the Old City Life Style, Phra Nakhon Si Ayutthaya Province”. Journal of Arts Management 6, no. 3 (September 6, 2022): 1585–1603. Accessed May 19, 2024. https://so02.tci-thaijo.org/index.php/jam/article/view/257035.