Rapeerat Srithi และ Singhanat Nomnian. (2014) Cultural diversity in English textbooks at a Thai primary education. Mahidol University:ม.ป.ท.Rapeerat Srithi และ Singhanat Nomnian. 2014. Cultural diversity in English textbooks at a Thai primary education. ม.ป.ท.:Mahidol University;Rapeerat Srithi และ Singhanat Nomnian. Cultural diversity in English textbooks at a Thai primary education. ม.ป.ท.:Mahidol University, 2014. Print.