Não informado. (1973). European Journal of Obstetrics & Gynecology and Reproductive Biology. Elsevier Science Publishers.
Lua i Stíl Chicago (17ú heag.)Não informado. European Journal of Obstetrics & Gynecology and Reproductive Biology. Amsterdam: Elsevier Science Publishers, 1973.
Lua MLA (8ú heag.)Não informado. European Journal of Obstetrics & Gynecology and Reproductive Biology. Elsevier Science Publishers, 1973.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.