APA Citation

Johnsgard, P. A. (1978). Ducks, geese, and swans of the world. London: University of Nebraska Press.

Chicago Style Citation

Johnsgard, Paul A. Ducks, Geese, and Swans of the World. London: University of Nebraska Press, 1978.

MLA Citation

Johnsgard, Paul A. Ducks, Geese, and Swans of the World. London: University of Nebraska Press, 1978.

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