Yingjuan Yang และ Naranan Suriyamanee. (2010) A study of bilingual school effectiveness in Chaoyang district of Beijing, China. Mahidol University:ม.ป.ท.Yingjuan Yang และ Naranan Suriyamanee. 2010. A study of bilingual school effectiveness in Chaoyang district of Beijing, China. ม.ป.ท.:Mahidol University;Yingjuan Yang และ Naranan Suriyamanee. A study of bilingual school effectiveness in Chaoyang district of Beijing, China. ม.ป.ท.:Mahidol University, 2010. Print.