APA (7th ed.) Citation

Martin, A. C., & Uhler, F. M. (1951). Food of game ducks in the United States and Canada. U.S. Govt. Print. Off.

Chicago Style (17th ed.) Citation

Martin, Alexander C., and F. M. Uhler. Food of Game Ducks in the United States and Canada. Washington: U.S. Govt. Print. Off, 1951.

MLA (9th ed.) Citation

Martin, Alexander C., and F. M. Uhler. Food of Game Ducks in the United States and Canada. U.S. Govt. Print. Off, 1951.