Cita APA (7a ed.)

Robinson, P. T. (2004). Life at the zoo: Behind the scenes with the animal doctors. Columbia University Press.

Cita Chicago Style (17a ed.)

Robinson, Phillip T. Life at the Zoo: Behind the Scenes with the Animal Doctors. New York: Columbia University Press, 2004.

Cita MLA (8a ed.)

Robinson, Phillip T. Life at the Zoo: Behind the Scenes with the Animal Doctors. Columbia University Press, 2004.