Audesirk, G. (1993). Biology: Life on earth (1993) (3rd ed.). Macmillan.
Lua i Stíl Chicago (17ú heag.)Audesirk, Gerald. Biology: Life on Earth (1993). 3rd ed. New York: Macmillan, 1993.
Lua MLA (9ú heag.)Audesirk, Gerald. Biology: Life on Earth (1993). 3rd ed. Macmillan, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.