Promsang, Akachai, Nantachai Pongpattananurak, Sangsan Phumsathan, and Chatchai Ngernsaengsaruay. 2022. “The Design of Nature Interpretation Program of the Hiking Trail In Phu Luang Wildlife Sanctuary”. Thai Journal of Forestry 33 (2). Bangkok, Thailand:77-87. https://li01.tci-thaijo.org/index.php/tjf/article/view/255442.