APA

Hegner R. W., Hegner J. Z., . (1953). Parade of the animal kingdom. New York: The Macmillan company.

Chicago

Hegner Robert William, Hegner Jane Zabriskie, . 1953. Parade of the animal kingdom. New York: The Macmillan company.

Harvard

Hegner R. W., Hegner J. Z., . (1953). Parade of the animal kingdom. New York: The Macmillan company.

MLA

Hegner Robert William, Hegner Jane Zabriskie, . Parade of the animal kingdom. New York: The Macmillan company. 1953.