Noknoi, Chetsada, Wannaporn Boripunt, Sutee Ngowsiri, and Saranya Itsararuk. “Ecotourism Management of Khao Pu-Khao Ya National Park”. Kasetsart Journal of Social Sciences 31, no. 3 (December 31, 2010): 412–423. accessed September 12, 2026. https://so04.tci-thaijo.org/index.php/kjss/article/view/246695.