Duangduen Bhanthumnavin และ Duchduen Bhanthumnavin. (2007) Sufficiency Economy at Individual Level: Theory and Research Findings for The Construction of Psycho-Behavioral Indicators. <i>NIDA Development Journal</i>, <i>47</i>(1), 27-79.Duangduen Bhanthumnavin และ Duchduen Bhanthumnavin. "Sufficiency Economy at Individual Level: Theory and Research Findings for The Construction of Psycho-Behavioral Indicators". NIDA Development Journal 47 (2007):27-79.Duangduen Bhanthumnavin และ Duchduen Bhanthumnavin. Sufficiency Economy at Individual Level: Theory and Research Findings for The Construction of Psycho-Behavioral Indicators. National Institute of Development Administration:ม.ป.ท. 2007.