APA (7th ed.) Citation

Johnsgard, P. A. (1992). Ducks in the wild: Conserving waterfowl and their habitats. Prentice Hall General Reference.

Chicago Style (17th ed.) Citation

Johnsgard, Paul A. Ducks in the Wild: Conserving Waterfowl and Their Habitats. New York: Prentice Hall General Reference, 1992.

MLA (9th ed.) Citation

Johnsgard, Paul A. Ducks in the Wild: Conserving Waterfowl and Their Habitats. Prentice Hall General Reference, 1992.