Bennett, D. P., & Humphries, D. A. (1965). Introduction to field biology. E. Arnold.
Lua i Stíl Chicago (17ú heag.)Bennett, Donald P., agus David A. Humphries. Introduction to Field Biology. London: E. Arnold, 1965.
Lua MLA (8ú heag.)Bennett, Donald P., agus David A. Humphries. Introduction to Field Biology. E. Arnold, 1965.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.