Michael Roberts. (2014). Biology for Life Second Edition (2nd.). Oxford University Press.
Lua i Stíl Chicago (17ú heag.)Michael Roberts. Biology for Life Second Edition. 2nd. Oxford University Press, 2014.
Lua MLA (9ú heag.)Michael Roberts. Biology for Life Second Edition. 2nd. Oxford University Press, 2014.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.