Raven, P. H., & Johnson, G. B. (1996). Biology (4th ed.). WCB.
Lua i Stíl Chicago (17ú heag.)Raven, Peter H., agus George B. Johnson. Biology. 4th ed. Boston: WCB, 1996.
Lua MLA (9ú heag.)Raven, Peter H., agus George B. Johnson. Biology. 4th ed. WCB, 1996.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.