Edholm, O. G. (1964). The biology of survival. Zoological Society of London.
Lua i Stíl Chicago (17ú heag.)Edholm, O. G. The Biology of Survival. London: Zoological Society of London, 1964.
Lua MLA (9ú heag.)Edholm, O. G. The Biology of Survival. Zoological Society of London, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.