Cita APA (7a ed.)
Sommer, V., & Vasey, P. L. (2010). Homosexual behaviour in animals: An evolutionary perspective. Cambridge University Press.
Cita Chicago Style (17a ed.)
Sommer, Volker, y Paul L. Vasey. Homosexual Behaviour in Animals: An Evolutionary Perspective. Cambridge ; New York: Cambridge University Press, 2010.
Cita MLA (9a ed.)
Sommer, Volker, y Paul L. Vasey. Homosexual Behaviour in Animals: An Evolutionary Perspective. Cambridge University Press, 2010.
Precaución: Estas citas no son 100% exactas.