Willey, A. (1930). Lectures on Darwinism. R.G. Badger.
Lua i Stíl Chicago (17ú heag.)Willey, Arthur. Lectures on Darwinism. Boston: R.G. Badger, 1930.
Lua MLA (8ú heag.)Willey, Arthur. Lectures on Darwinism. R.G. Badger, 1930.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.