มัธยมบุรุษ วารัชต์. “A model of Phayao tourism Image Management”. Trends of Humanities and Social Sciences Research 6, no. 2 (June 21, 2019): 8–28. accessed September 10, 2026. https://so03.tci-thaijo.org/index.php/Humanties-up/article/view/196532.