APA (7th ed.) Citation

Hediger, H., Vevers, G., & Reade, W. Man and animal in the zoo: Zoo biology.

Chicago Style (17th ed.) Citation

Hediger, Heini, Gwynne Vevers, and Winwood Reade. Man and Animal in the Zoo: Zoo Biology.

MLA (9th ed.) Citation

Hediger, Heini, et al. Man and Animal in the Zoo: Zoo Biology.