Barnett, S. A. (1962). A century of Darwin. Mercury Books.
Lua i Stíl Chicago (17ú heag.)Barnett, S. A. A Century of Darwin. London: Mercury Books, 1962.
Lua MLA (9ú heag.)Barnett, S. A. A Century of Darwin. Mercury Books, 1962.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.