Darwin, C. (1872). On the origin of species: By means of natural selection (Sixth edition.). The Floating Press.
Lua i Stíl Chicago (17ú heag.)Darwin, Charles. On the Origin of Species: By Means of Natural Selection. Sixth edition. [Auckland, New Zealand]: The Floating Press, 1872.
Lua MLA (9ú heag.)Darwin, Charles. On the Origin of Species: By Means of Natural Selection. Sixth edition. The Floating Press, 1872.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.