Citazione Stile APA (7a Edizione)

Polakowski, K. J. (1987). Zoo design: The reality of wild illusions. University of Michigan, School of Natural Resources.

Citazione stile Chigago Style (17a edizione)

Polakowski, Kenneth J. Zoo Design: The Reality of Wild Illusions. [Ann Harbor]: University of Michigan, School of Natural Resources, 1987.

Citatione MLA (9a ed.)

Polakowski, Kenneth J. Zoo Design: The Reality of Wild Illusions. University of Michigan, School of Natural Resources, 1987.