APA (7th ed.) Citation

Coker, R. E. (1930). Studies of common fishes of the Mississippi River at Keokuk. U.S. Govt. Print. Off..

Chicago Style (17th ed.) Citation

Coker, R. E. Studies of Common Fishes of the Mississippi River at Keokuk. Washington, D.C.: U.S. Govt. Print. Off., 1930.

MLA (9th ed.) Citation

Coker, R. E. Studies of Common Fishes of the Mississippi River at Keokuk. U.S. Govt. Print. Off., 1930.