Cita APA (7th ed.)

Hegner, R. (1957). Parade of the animal kingdom. The Macmillan.

Cita Chicago (17th ed.)

Hegner, Robert. Parade of the Animal Kingdom. New York: The Macmillan, 1957.

Cita MLA (9th ed.)

Hegner, Robert. Parade of the Animal Kingdom. The Macmillan, 1957.