Não informado. (1949). General embryological information service. International Embryological Institute, Hubrecht Laboratory.
Lua i Stíl Chicago (17ú heag.)Não informado. General Embryological Information Service. Utrecht, Holanda: International Embryological Institute, Hubrecht Laboratory, 1949.
Lua MLA (8ú heag.)Não informado. General Embryological Information Service. International Embryological Institute, Hubrecht Laboratory, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.