Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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