Sears, P. B. (1964). The biology of the living landscape: An introduction to ecology. The Scientific Club.
Lua i Stíl Chicago (17ú heag.)Sears, Paul B. The Biology of the Living Landscape: An Introduction to Ecology. London: The Scientific Club, 1964.
Lua MLA (9ú heag.)Sears, Paul B. The Biology of the Living Landscape: An Introduction to Ecology. The Scientific Club, 1964.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.