Sumalee Santipollavut และผู้แต่งคนอื่นๆ. (2002) The relationships between quality of life and labour productivity on the path of sustainable development. National Institute of Development Administration:ม.ป.ท.Sumalee Santipollavut และผู้แต่งคนอื่นๆ. 2002. The relationships between quality of life and labour productivity on the path of sustainable development. ม.ป.ท.:National Institute of Development Administration;Sumalee Santipollavut และผู้แต่งคนอื่นๆ. The relationships between quality of life and labour productivity on the path of sustainable development. ม.ป.ท.:National Institute of Development Administration, 2002. Print.