APA-viite (7. p.)

Hornaday, W. T. (1911). Popular official guide to the New York zoological park (11th ed.). New York zoological society.

Chicago-viite (17. p.)

Hornaday, William T. Popular Official Guide to the New York Zoological Park. 11th ed. New York: New York zoological society, 1911.

MLA-viite (9. p.)

Hornaday, William T. Popular Official Guide to the New York Zoological Park. 11th ed. New York zoological society, 1911.