Cita APA (7th ed.)
Burghardt, G. M. (2005). The genesis of animal play: Testing the limits. MIT Press.
Cita Chicago (17th ed.)
Burghardt, Gordon M. The Genesis of Animal Play: Testing the Limits. Cambridge, Mass.: MIT Press, 2005.
Cita MLA (9th ed.)
Burghardt, Gordon M. The Genesis of Animal Play: Testing the Limits. MIT Press, 2005.
Atenció: Aquestes cites poden no estar 100% correctes.