Simpson, G. G. (1949). The meaning of evolution: A study of the history of life and of its significance for man. Yale Univ. Press.
Lua i Stíl Chicago (17ú heag.)Simpson, George Gaylord. The Meaning of Evolution: A Study of the History of Life and of Its Significance for Man. New Haven: Yale Univ. Press, 1949.
Lua MLA (9ú heag.)Simpson, George Gaylord. The Meaning of Evolution: A Study of the History of Life and of Its Significance for Man. Yale Univ. Press, 1949.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.