APA (7th ed.) Citation

United States. Bureau of Agricultural Economics. (1940). County lines. Bureau of Agricultural Economics.

Chicago Style (17th ed.) Citation

United States. Bureau of Agricultural Economics. County Lines. [Washington]: Bureau of Agricultural Economics, 1940.

MLA (8th ed.) Citation

United States. Bureau of Agricultural Economics. County Lines. Bureau of Agricultural Economics, 1940.

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