Hanson, E. D. Animal Diversity. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)Hanson, Earl D. Animal Diversity. Prentice-Hall.
Lua MLA (8ú heag.)Hanson, Earl D. Animal Diversity. Prentice-Hall.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.