Thomson, K. (2006). Fossils: A Very Short Introduction (1st.). Oxford.
Cita Chicago Style (17a ed.)Thomson, Keith. Fossils: A Very Short Introduction. 1st. Oxford, 2006.
Cita MLA (9a ed.)Thomson, Keith. Fossils: A Very Short Introduction. 1st. Oxford, 2006.
Precaución: Estas citas no son 100% exactas.