Cita APA (7a ed.)

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

Cita Chicago Style (17a ed.)

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

Cita MLA (9a ed.)

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