APA (7th ed.) Citation

United States. Office of Cooperative Extension Work. (1931). Agricultural economics extension. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Office of Cooperative Extension Work. Agricultural Economics Extension. [Washington]: [publisher not identified], 1931.

MLA (9th ed.) Citation

United States. Office of Cooperative Extension Work. Agricultural Economics Extension. [publisher not identified], 1931.

Warning: These citations may not always be 100% accurate.