Chinnawat Chueasraku และ Boon-anan Phinaitrup. (2015) Effectiveness : the case study of hotels in Bangkok. National Institute of Development Administration:ม.ป.ท.Chinnawat Chueasraku และ Boon-anan Phinaitrup. 2015. Effectiveness : the case study of hotels in Bangkok. ม.ป.ท.:National Institute of Development Administration;Chinnawat Chueasraku และ Boon-anan Phinaitrup. Effectiveness : the case study of hotels in Bangkok. ม.ป.ท.:National Institute of Development Administration, 2015. Print.