Cita APA (7th ed.)

Hey, J. (2001). Genes, categories, and species: The evolutionary and cognitive causes of the species problem. Oxford University Press.

Cita Chicago (17th ed.)

Hey, Jody. Genes, Categories, and Species: The Evolutionary and Cognitive Causes of the Species Problem. Oxford ; New York: Oxford University Press, 2001.

Cita MLA (9th ed.)

Hey, Jody. Genes, Categories, and Species: The Evolutionary and Cognitive Causes of the Species Problem. Oxford University Press, 2001.