APA (7e ed.) Bronvermelding

Hornaday, W. T. (1909). Popular official guide to the New York zoological park (10th ed.). New York Zoological Society.

Chicago (17e ed.) Bronvermelding

Hornaday, William T. Popular Official Guide to the New York Zoological Park. 10th ed. New York: New York Zoological Society, 1909.

MLA (9e ed.) Bronvermelding

Hornaday, William T. Popular Official Guide to the New York Zoological Park. 10th ed. New York Zoological Society, 1909.