Thomson, K. (2006). Fossils: A Very Short Introduction (1st.). Oxford.
Lua i Stíl Chicago (17ú heag.)Thomson, Keith. Fossils: A Very Short Introduction. 1st. Oxford, 2006.
Lua MLA (9ú heag.)Thomson, Keith. Fossils: A Very Short Introduction. 1st. Oxford, 2006.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.