Boonchauy Boonmee และผู้แต่งคนอื่นๆ. (2006) Modeling demand for Thai national park ecotourism : a GIS-linked spatial dependent model for Phu Jong Na Yoi National Park, Ubon Ratchathani, Thailand. Chulalongkorn University:ม.ป.ท.Boonchauy Boonmee และผู้แต่งคนอื่นๆ. 2006. Modeling demand for Thai national park ecotourism : a GIS-linked spatial dependent model for Phu Jong Na Yoi National Park, Ubon Ratchathani, Thailand. ม.ป.ท.:Chulalongkorn University;Boonchauy Boonmee และผู้แต่งคนอื่นๆ. Modeling demand for Thai national park ecotourism : a GIS-linked spatial dependent model for Phu Jong Na Yoi National Park, Ubon Ratchathani, Thailand. ม.ป.ท.:Chulalongkorn University, 2006. Print.