Cunningham, f. g. (2005). williams obstetrics 22 nd edition. McGraw-Hill Book Company.
Lua i Stíl Chicago (17ú heag.)Cunningham, f. gary. Williams Obstetrics 22 Nd Edition. McGraw-Hill Book Company, 2005.
Lua MLA (9ú heag.)Cunningham, f. gary. Williams Obstetrics 22 Nd Edition. McGraw-Hill Book Company, 2005.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.