Hegner, R. (1957). Parade of the animal kingdom. The Macmillan.
Lua i Stíl Chicago (17ú heag.)Hegner, Robert. Parade of the Animal Kingdom. New York: The Macmillan, 1957.
Lua MLA (9ú heag.)Hegner, Robert. Parade of the Animal Kingdom. The Macmillan, 1957.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.