Phitchayapirath, P. ., and P. . Somnuek. “THE DEVELOPMENT OF A LOCAL CURRICULUM ON ‘GEOTOURISM’ FOR SCHOOLS IN THE PHACHAN-SAMPANBOK GEOPARK AREA, UBON RATCHATHANI PROVINCE”. Journal of MCU Nakhondhat, vol. 12, no. 5, May 2025, pp. 263-72, https://so03.tci-thaijo.org/index.php/JMND/article/view/289030.