Sasithorn Phonkaew และผู้แต่งคนอื่นๆ. (2006) Environmental responsiveness as competitive advantage : strategic framework for sustaining tourism development in Thailand. National Institute of Development Administration:ม.ป.ท.Sasithorn Phonkaew และผู้แต่งคนอื่นๆ. 2006. Environmental responsiveness as competitive advantage : strategic framework for sustaining tourism development in Thailand. ม.ป.ท.:National Institute of Development Administration;Sasithorn Phonkaew และผู้แต่งคนอื่นๆ. Environmental responsiveness as competitive advantage : strategic framework for sustaining tourism development in Thailand. ม.ป.ท.:National Institute of Development Administration, 2006. Print.