Angkana Rungklab. (1999) Trends of human resource development of Thai private sectors in the economic recession. Mahidol University,:ม.ป.ท.Angkana Rungklab. 1999. Trends of human resource development of Thai private sectors in the economic recession. ม.ป.ท.:Mahidol University,;Angkana Rungklab. Trends of human resource development of Thai private sectors in the economic recession. ม.ป.ท.:Mahidol University, 1999. Print.