Wattana Boonjub และ Colin Long. (2009) Cultural heritage across borders : inclusive tourism and barrier-free design in the greater Mekong sub-region. Silpakorn University:ม.ป.ท.Wattana Boonjub และ Colin Long. 2009. Cultural heritage across borders : inclusive tourism and barrier-free design in the greater Mekong sub-region. ม.ป.ท.:Silpakorn University;Wattana Boonjub และ Colin Long. Cultural heritage across borders : inclusive tourism and barrier-free design in the greater Mekong sub-region. ม.ป.ท.:Silpakorn University, 2009. Print.