Darwin, C. (1899). The Variation of animals and plants under domestication. D. Appleton.
Lua i Stíl Chicago (17ú heag.)Darwin, Charles. The Variation of Animals and Plants Under Domestication. New York: D. Appleton, 1899.
Lua MLA (9ú heag.)Darwin, Charles. The Variation of Animals and Plants Under Domestication. D. Appleton, 1899.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.