APA (7th ed.) Citation

United States. Federal Bureau of Investigation. (1939). Classification of Fingerprints, 1939. [s.n.].

Chicago Style (17th ed.) Citation

United States. Federal Bureau of Investigation. Classification of Fingerprints, 1939. [Washington]: [s.n.], 1939.

MLA (9th ed.) Citation

United States. Federal Bureau of Investigation. Classification of Fingerprints, 1939. [s.n.], 1939.

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