Le และ Thi Bach Yen. (1998) Regional inequality of education in Vietnam : rural-urban issues and options for policy and planning. Mahidol University,:ม.ป.ท.Le และ Thi Bach Yen. 1998. Regional inequality of education in Vietnam : rural-urban issues and options for policy and planning. ม.ป.ท.:Mahidol University,;Le และ Thi Bach Yen. Regional inequality of education in Vietnam : rural-urban issues and options for policy and planning. ม.ป.ท.:Mahidol University, 1998. Print.