Nakhapaksin, Sukanda, Aree NaiPinit, Thongphon PromSaka Na Sakolnakorn, and Patarapong Kroeksakul. 2020. “ORGANIC-AGRO TOURISM DEVELOPMENT MODEL IN ROI-KAEN-SARN-SIN PROVINCE CLUSTER, NORTHEAST OF THAILAND”. Journal of MCU Social Science Review 6 (1). Ayutthaya, Thailand:209-20. https://so03.tci-thaijo.org/index.php/jssr/article/view/245585.