©2013 National Research Council of Thailand
Onrapin Keskasemsook. 2005. Thai tourist behavior in Muang district, Tak province. Field of Study Environment, Mahidol University;
Onrapin Keskasemsook. (2005) Thai tourist behavior in Muang district, Tak province . Mahidol University/Bangkok.
Onrapin Keskasemsook. Thai tourist behavior in Muang district, Tak province. . Bangkok:Mahidol University, 2005.
Onrapin Keskasemsook. (2005) Thai tourist behavior in Muang district, Tak province . Mahidol University/Bangkok.