Cita APA (7a ed.)

(1972). Classification of the animal kingdom: An illustrated guide. English Universities Press : Reader's Digest Association.

Cita Chicago Style (17a ed.)

Classification of the Animal Kingdom: An Illustrated Guide. London: English Universities Press : Reader's Digest Association, 1972.

Cita MLA (9a ed.)

Classification of the Animal Kingdom: An Illustrated Guide. English Universities Press : Reader's Digest Association, 1972.