Cita APA (7a ed.)

Gruen, L. (2011). Ethics and animals: An introduction. Cambridge University Press.

Cita Chicago Style (17a ed.)

Gruen, Lori. Ethics and Animals: An Introduction. Cambridge ; New York: Cambridge University Press, 2011.

Cita MLA (9a ed.)

Gruen, Lori. Ethics and Animals: An Introduction. Cambridge University Press, 2011.