Raven, P. H., & Johnson, G. B. (1986). Biology. Times Mirror / Mosby.
Lua i Stíl Chicago (17ú heag.)Raven, Peter H., agus George B. Johnson. Biology. Toronto: Times Mirror / Mosby, 1986.
Lua MLA (9ú heag.)Raven, Peter H., agus George B. Johnson. Biology. Times Mirror / Mosby, 1986.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.