Xayavongsa และผู้แต่งคนอื่นๆ. (2018) Delay of gratification and business performance in least developed countries : evidence from LAO PDR. National Institute of Development Administration:ม.ป.ท.Xayavongsa และผู้แต่งคนอื่นๆ. 2018. Delay of gratification and business performance in least developed countries : evidence from LAO PDR. ม.ป.ท.:National Institute of Development Administration;Xayavongsa และผู้แต่งคนอื่นๆ. Delay of gratification and business performance in least developed countries : evidence from LAO PDR. ม.ป.ท.:National Institute of Development Administration, 2018. Print.