Não informado. (2010). British Journal of Obstetrics and Gynaecology. Blackwell Scientific Publications.
Lua i Stíl Chicago (17ú heag.)Não informado. British Journal of Obstetrics and Gynaecology. Oxford, Inglaterra: Blackwell Scientific Publications, 2010.
Lua MLA (8ú heag.)Não informado. British Journal of Obstetrics and Gynaecology. Blackwell Scientific Publications, 2010.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.