APA (7th ed.) Citation

Johnsgard, P. A. (1968). Waterfowl: Their biology and natural history. Univ. of Nebraska Press.

Chicago Style (17th ed.) Citation

Johnsgard, Paul A. Waterfowl: Their Biology and Natural History. Lincoln: Univ. of Nebraska Press, 1968.

MLA (9th ed.) Citation

Johnsgard, Paul A. Waterfowl: Their Biology and Natural History. Univ. of Nebraska Press, 1968.

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