Pharino, Chonlada, and Sunee Leawpenwong. 2015. “Investigating Gaps in Sustainable Community Tourism: A Case Study of Local Communities in the Vicinity of Khon Kaen Zoo”. Journal of Mekong Societies 11 (2):61-74. https://so03.tci-thaijo.org/index.php/mekongjournal/article/view/38745.