Não informado. (2010). British Journal of Obstetrics and Gynaecology. Blackwell Scientific Publications.
Cita Chicago Style (17a ed.)Não informado. British Journal of Obstetrics and Gynaecology. Oxford, Inglaterra: Blackwell Scientific Publications, 2010.
Cita MLA (8a ed.)Não informado. British Journal of Obstetrics and Gynaecology. Blackwell Scientific Publications, 2010.
Precaución: Estas citas no son 100% exactas.