APA Citation

Youth, H., & Prugh, T. (2003). Winged messengers: The decline of birds. Washington, D.C.: Worldwatch Institute.

Chicago Style Citation

Youth, Howard, and Thomas Prugh. Winged Messengers: The Decline of Birds. Washington, D.C.: Worldwatch Institute, 2003.

MLA Citation

Youth, Howard, and Thomas Prugh. Winged Messengers: The Decline of Birds. Washington, D.C.: Worldwatch Institute, 2003.

Warning: These citations may not always be 100% accurate.