Jingshan และ You. (1991) The impact of sex preference on the acceptance of the one-child certificate in Shaanxi Province, China. Mahidol University,:ม.ป.ท.Jingshan และ You. 1991. The impact of sex preference on the acceptance of the one-child certificate in Shaanxi Province, China. ม.ป.ท.:Mahidol University,;Jingshan และ You. The impact of sex preference on the acceptance of the one-child certificate in Shaanxi Province, China. ม.ป.ท.:Mahidol University, 1991. Print.