Dugatkin, L. A. (1997). Cooperation among animals: An evolutionary perspective. Oxford University Press.
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Chicago-čujuhus (17. p.)
Dugatkin, Lee Alan. Cooperation Among Animals: An Evolutionary Perspective. New York: Oxford University Press, 1997.
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MLA-čujuhus (9. p.)
Dugatkin, Lee Alan. Cooperation Among Animals: An Evolutionary Perspective. Oxford University Press, 1997.
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