Suvisa T. Chiengthong และ Chanin Yoopetch. (2011) Youth tourism : the identification of demographic characteristics and travel behaviors of international young travelers upon visiting Thailand. Mahidol University:ม.ป.ท.Suvisa T. Chiengthong และ Chanin Yoopetch. 2011. Youth tourism : the identification of demographic characteristics and travel behaviors of international young travelers upon visiting Thailand. ม.ป.ท.:Mahidol University;Suvisa T. Chiengthong และ Chanin Yoopetch. Youth tourism : the identification of demographic characteristics and travel behaviors of international young travelers upon visiting Thailand. ม.ป.ท.:Mahidol University, 2011. Print.