Παραπομπή σε μορφή APA (7η εκδ.)

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

Παραπομπή σε μορφή Chicago (17η εκδ.)

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

Παραπομπή σε μορφή MLA (9th εκδ.)

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