Hawkins,Mike. (1997). Social Darwinism in European and American thought 1860-1945: Nature as model and nature as threat. Cambridge university press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHawkins,Mike. Social Darwinism in European and American Thought 1860-1945: Nature as Model and Nature as Threat. Cambridge, New York: Cambridge university press, 1997.
एमएलए (9वां संस्करण) प्रशस्ति पत्रHawkins,Mike. Social Darwinism in European and American Thought 1860-1945: Nature as Model and Nature as Threat. Cambridge university press, 1997.
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