Arunswasdi Bhuridadtpong และ Punthumadee Katawandee. (2008) Value-based development of Chiang Khan District, Loei Province, as a cultural tourism destination. Chulalongkorn University:ม.ป.ท.Arunswasdi Bhuridadtpong และ Punthumadee Katawandee. 2008. Value-based development of Chiang Khan District, Loei Province, as a cultural tourism destination. ม.ป.ท.:Chulalongkorn University;Arunswasdi Bhuridadtpong และ Punthumadee Katawandee. Value-based development of Chiang Khan District, Loei Province, as a cultural tourism destination. ม.ป.ท.:Chulalongkorn University, 2008. Print.