ทรัพย์สมบูรณ์ ย., and ภัทรภิญโญพงศ์ ว. “An Examination of Major Tourist Attractions in Chai Nat Province to Provide Information for Creating Tourism Added Value”. Liberal Arts Review, vol. 14, no. 2, Dec. 2019, pp. 1-14, https://so04.tci-thaijo.org/index.php/larhcu/article/view/228894.