APA (7th ed.) Citation

United States. War Department. War Plans Division. (1912). Classification and index. GPO.

Chicago Style (17th ed.) Citation

United States. War Department. War Plans Division. Classification and Index. [Washington]: GPO, 1912.

MLA (9th ed.) Citation

United States. War Department. War Plans Division. Classification and Index. GPO, 1912.

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