Jantakham, Supamitr, Danwichai Sairaksa, and Rungsan Singhalert. 2020. “The Geotourism Development Strategies for Khon Kean Geopark Towards to UNESCO Global Geopark”. Journal of Education Rajabhat Maha Sarakham University 17 (1). Maha Sarakham, Thailand:599-611. https://so06.tci-thaijo.org/index.php/edu-rmu/article/view/252243.