APA (7th ed.) Citation

United States. Bureau of Agricultural Economics. (1943). Work performed with principal farm machines. [s.n.].

Chicago Style (17th ed.) Citation

United States. Bureau of Agricultural Economics. Work Performed with Principal Farm Machines. [Washington]: [s.n.], 1943.

MLA (9th ed.) Citation

United States. Bureau of Agricultural Economics. Work Performed with Principal Farm Machines. [s.n.], 1943.

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