Mader, S. S. (1993). Biology: Part five, Biology of animal structure and function (4th ed.). Wm. C. Brown Publishers.
Lua i Stíl Chicago (17ú heag.)Mader, Sylvia S. Biology: Part Five, Biology of Animal Structure and Function. 4th ed. Dubuque, IA: Wm. C. Brown Publishers, 1993.
Lua MLA (9ú heag.)Mader, Sylvia S. Biology: Part Five, Biology of Animal Structure and Function. 4th ed. Wm. C. Brown Publishers, 1993.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.