APA (7th ed.) Citation

United States. Department of Agriculture. (1930). Directory of field activities of Bureau of Entomology. GPO.

Chicago Style (17th ed.) Citation

United States. Department of Agriculture. Directory of Field Activities of Bureau of Entomology. [Washington]: GPO, 1930.

MLA (9th ed.) Citation

United States. Department of Agriculture. Directory of Field Activities of Bureau of Entomology. GPO, 1930.

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