APA (7th ed.) Citation

Bellrose, F. C., & Kortright, F. H. (1976). Ducks, geese & swans of North America: A completely new and expanded version of the classic work by F. H. Kortright (2d ed.). Stackpole Books.

Chicago Style (17th ed.) Citation

Bellrose, Frank C., and Francis H. Kortright. Ducks, Geese & Swans of North America: A Completely New and Expanded Version of the Classic Work by F. H. Kortright. 2d ed. Harrisburg, Pa.: Stackpole Books, 1976.

MLA (9th ed.) Citation

Bellrose, Frank C., and Francis H. Kortright. Ducks, Geese & Swans of North America: A Completely New and Expanded Version of the Classic Work by F. H. Kortright. 2d ed. Stackpole Books, 1976.