APA ציטוט

Wu, J., & Morris, J. K. (2013). Trends in maternal age distribution and the live birth prevalence of Down's syndrome in England and Wales: 1938–2010. Nature Publishing Group.

Citação norma Chicago

Wu, Jianhua, and Joan K. Morris. Trends in Maternal Age Distribution and the Live Birth Prevalence of Down's Syndrome in England and Wales: 1938–2010. Nature Publishing Group, 2013.

ציטוט MLA

Wu, Jianhua, and Joan K. Morris. Trends in Maternal Age Distribution and the Live Birth Prevalence of Down's Syndrome in England and Wales: 1938–2010. Nature Publishing Group, 2013.