Kimball, . J. W. (1982). Biologia.
Lua i Stíl Chicago (17ú heag.)Kimball, John W. Biologia. 1982.
Lua MLA (9ú heag.)Kimball, John W. Biologia. 1982.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.
Lua APA (7ú heag.)