Berra, T. M. (2009). Charles Darwin: The Concise Story of an Extraordinary Man. Johns Hopkins University Press.
Cita Chicago Style (17a ed.)Berra, Tim M. Charles Darwin: The Concise Story of an Extraordinary Man. Baltimore, Md.: Johns Hopkins University Press, 2009.
Cita MLA (8a ed.)Berra, Tim M. Charles Darwin: The Concise Story of an Extraordinary Man. Johns Hopkins University Press, 2009.
Precaución: Estas citas no son 100% exactas.