APA (7th ed.) Citation

Knudtson, A. C., & Cox, R. W. (1962). Upper Midwest agriculture: Structure and problems. Upper Midwest Economic Study.

Chicago Style (17th ed.) Citation

Knudtson, Arvid Cornelius, and Rex W. Cox. Upper Midwest Agriculture: Structure and Problems. [Minneapolis]: Upper Midwest Economic Study, 1962.

MLA (9th ed.) Citation

Knudtson, Arvid Cornelius, and Rex W. Cox. Upper Midwest Agriculture: Structure and Problems. Upper Midwest Economic Study, 1962.