Orathai Sujitprapakorn และ Paitoon Kaipornsak. (2004) Role of education on income inequality in Thailand. Chulalongkorn University:ม.ป.ท.Orathai Sujitprapakorn และ Paitoon Kaipornsak. 2004. Role of education on income inequality in Thailand. ม.ป.ท.:Chulalongkorn University;Orathai Sujitprapakorn และ Paitoon Kaipornsak. Role of education on income inequality in Thailand. ม.ป.ท.:Chulalongkorn University, 2004. Print.