Wright, D. (1989). Human biology. Heinemann Educational.
Lua i Stíl Chicago (17ú heag.)Wright, David. Human Biology. Oxford: Heinemann Educational, 1989.
Lua MLA (9ú heag.)Wright, David. Human Biology. Heinemann Educational, 1989.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.