NONTHAPOT, Sakkarin, 		WATTANAKUL, Thanet, AND 		WANGKEEREE, Kitiya.
" Spending Behavior of Thai Tourists in Dan Sai District, Loei province, Thailand: Seemingly Unrelated Regression Estimation Analysis" <em>Journal of Environmental Management and Tourism</em> [Online], Volume 9 Number 5 (1 January 2019)