Hirst, B. C. (1912). A text-book of obstetrics (7th ed., rev. and enl.). W.B. Saunders Company.
Lua i Stíl Chicago (17ú heag.)Hirst, Barton Cooke. A Text-book of Obstetrics. 7th ed., rev. and enl. Philadelphia: W.B. Saunders Company, 1912.
Lua MLA (8ú heag.)Hirst, Barton Cooke. A Text-book of Obstetrics. 7th ed., rev. and enl. W.B. Saunders Company, 1912.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.