APA (7th ed.) Citation

Wulfert, M. A. (1926). Butter and cheese markets in South America. U.S. Government Printing Office.

Chicago Style (17th ed.) Citation

Wulfert, M. A. Butter and Cheese Markets in South America. [Washington?]: U.S. Government Printing Office, 1926.

MLA (9th ed.) Citation

Wulfert, M. A. Butter and Cheese Markets in South America. U.S. Government Printing Office, 1926.