Hofstadter, R. (1955). Social Darwinism in American thought. Beacon Press.
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Chicago-čujuhus (17. p.)
Hofstadter, Richard. Social Darwinism in American Thought. Boston: Beacon Press, 1955.
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MLA-čujuhus (9. p.)
Hofstadter, Richard. Social Darwinism in American Thought. Beacon Press, 1955.
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