Nantaporn Mingkwan. (2014) Green practice level of exhibition venues from exhibitors' perspectives. Mahidol university:ม.ป.ท.Nantaporn Mingkwan. 2014. Green practice level of exhibition venues from exhibitors' perspectives. ม.ป.ท.:Mahidol university;Nantaporn Mingkwan. Green practice level of exhibition venues from exhibitors' perspectives. ม.ป.ท.:Mahidol university, 2014. Print.