APA (7th ed.) Citation

Clark, J. G. (1966). The grain trade in the Old Northwest. University of Illinois Press.

Chicago Style (17th ed.) Citation

Clark, John Garretson. The Grain Trade in the Old Northwest. Urbana: University of Illinois Press, 1966.

MLA (9th ed.) Citation

Clark, John Garretson. The Grain Trade in the Old Northwest. University of Illinois Press, 1966.