APA (7th ed.) Citation

United States. Federal Bureau of Investigation. (1941). Classification of fingerprints. U.S. Govt. print. off.

Chicago Style (17th ed.) Citation

United States. Federal Bureau of Investigation. Classification of Fingerprints. Washington: U.S. Govt. print. off, 1941.

MLA (9th ed.) Citation

United States. Federal Bureau of Investigation. Classification of Fingerprints. U.S. Govt. print. off, 1941.

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