Taksina Seanyen และ Kassara Sukpatch. (2015) Communication model for promoting tourism on Thai Lanna cultural conservation. National Institute of Development Administration:ม.ป.ท.Taksina Seanyen และ Kassara Sukpatch. 2015. Communication model for promoting tourism on Thai Lanna cultural conservation. ม.ป.ท.:National Institute of Development Administration;Taksina Seanyen และ Kassara Sukpatch. Communication model for promoting tourism on Thai Lanna cultural conservation. ม.ป.ท.:National Institute of Development Administration, 2015. Print.