Tohutoro APA (7th ed.)
Sommer, V., & Vasey, P. L. (2010). Homosexual behaviour in animals: An evolutionary perspective. Cambridge University Press.
Tohutoru Kātū Chicago (17th ed.)
Sommer, Volker, me Paul L. Vasey. Homosexual Behaviour in Animals: An Evolutionary Perspective. Cambridge ; New York: Cambridge University Press, 2010.
Tohutoro MLA (9th ed.)
Sommer, Volker, me Paul L. Vasey. Homosexual Behaviour in Animals: An Evolutionary Perspective. Cambridge University Press, 2010.
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