APA (7e ed.) Bronvermelding

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

Chicago (17e ed.) Bronvermelding

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

MLA (9e ed.) Bronvermelding

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