Lambert, D. (1987). The Cambridge guide to prehistoric man. Cambridge University Press.
Lua i Stíl Chicago (17ú heag.)Lambert, David. The Cambridge Guide to Prehistoric Man. London: Cambridge University Press, 1987.
Lua MLA (9ú heag.)Lambert, David. The Cambridge Guide to Prehistoric Man. Cambridge University Press, 1987.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.