APA (7th ed.) Citation

Geffen, A. M. (1978). A birdwatcher's guide to the Eastern United States. Barron's.

Chicago Style (17th ed.) Citation

Geffen, Alice M. A Birdwatcher's Guide to the Eastern United States. Woodbury, N.Y.: Barron's, 1978.

MLA (9th ed.) Citation

Geffen, Alice M. A Birdwatcher's Guide to the Eastern United States. Barron's, 1978.