Não informado. (1929). Human biology. Human Biology Council.
Lua i Stíl Chicago (17ú heag.)Não informado. Human Biology. Detroit, Mich: Human Biology Council, 1929.
Lua MLA (8ú heag.)Não informado. Human Biology. Human Biology Council, 1929.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.