Sonthichai, Supachock, and Artiyaporn Sinprasert. 2019. “A Study of Migration Ethnics Groups of Boeng -Tai in Chi River Basin”. Journal of Building Energy & Environment 2 (1). Khon Kaen, Thailand:66-79. https://ph03.tci-thaijo.org/index.php/bee/article/view/18.