Benton, A. H. (1966). Field biology and ecology. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Benton, Allen H. Field Biology and Ecology. Nueva York: McGraw-Hill, 1966.
Lua MLA (9ú heag.)Benton, Allen H. Field Biology and Ecology. McGraw-Hill, 1966.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.