PURVES, W. K. (1987). Life The Science Of Biology. Sinauer Associates.
Lua i Stíl Chicago (17ú heag.)PURVES, William K. Life The Science Of Biology. Sinauer Associates, 1987.
Lua MLA (8ú heag.)PURVES, William K. Life The Science Of Biology. Sinauer Associates, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.