Guang และ Xu. (1992) Analytical study on socio-economic and cultural factors of deaf children and their families in Thailand. Mahidol University,:ม.ป.ท.Guang และ Xu. 1992. Analytical study on socio-economic and cultural factors of deaf children and their families in Thailand. ม.ป.ท.:Mahidol University,;Guang และ Xu. Analytical study on socio-economic and cultural factors of deaf children and their families in Thailand. ม.ป.ท.:Mahidol University, 1992. Print.