APA-viite (7. p.)

Zim, H. S., & Gabrielson, I. N. (1956). Birds: A guide to the most familiar american birds. Simon and Schuster.

Chicago-viite (17. p.)

Zim, Herbert S., ja Ira N. Gabrielson. Birds: A Guide to the Most Familiar American Birds. Nueva York: Simon and Schuster, 1956.

MLA-viite (9. p.)

Zim, Herbert S., ja Ira N. Gabrielson. Birds: A Guide to the Most Familiar American Birds. Simon and Schuster, 1956.