Berra, T. M. (2009). Charles Darwin: The concise story of an extraordinary man. Johns Hopkins University Press.
Chicago Style (17. basım) AtıfBerra, Tim M. Charles Darwin: The Concise Story of an Extraordinary Man. Baltimore, Md.: Johns Hopkins University Press, 2009.
MLA (9th ed.) AtıfBerra, Tim M. Charles Darwin: The Concise Story of an Extraordinary Man. Johns Hopkins University Press, 2009.
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