Mukajng, W., & Chanvichai, K. (2022). Public relations process for tourist attraction in Nakhon Chum Sub-district, Nakhon Thai District, Phitsanulok Province. Journal of Business, Innovation and Sustainability (JBIS), 17(1). สืบค้น จาก https://so02.tci-thaijo.org/index.php/BECJournal/article/view/241049