Singer, P. (2000). A Darwinian Left: Politics, evolution, and cooperation. Yale University Press.
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Chicago-čujuhus (17. p.)
Singer, Peter. A Darwinian Left: Politics, Evolution, and Cooperation. New Haven: Yale University Press, 2000.
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MLA-čujuhus (9. p.)
Singer, Peter. A Darwinian Left: Politics, Evolution, and Cooperation. Yale University Press, 2000.
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