Sumrit Yipyintum. (2014) The adoption of the philosophy of sufficience economy and its impacts on the employees' perspective and the organization's productivity : An action research on the river group. สถาบันบัณฑิตพัฒนบริหารศาสตร์:ม.ป.ท.Sumrit Yipyintum. 2014. The adoption of the philosophy of sufficience economy and its impacts on the employees' perspective and the organization's productivity : An action research on the river group. ม.ป.ท.:สถาบันบัณฑิตพัฒนบริหารศาสตร์;Sumrit Yipyintum. The adoption of the philosophy of sufficience economy and its impacts on the employees' perspective and the organization's productivity : An action research on the river group. ม.ป.ท.:สถาบันบัณฑิตพัฒนบริหารศาสตร์, 2014. Print.