APA (7th ed.) Citation

United States. Navy Department. Bureau of Navigation. (1921). One finger system, for use of Hospital Corps men assigned to duty at recruiting stations. U.S. GPO.

Chicago Style (17th ed.) Citation

United States. Navy Department. Bureau of Navigation. One Finger System, for Use of Hospital Corps Men Assigned to Duty at Recruiting Stations. Washington: U.S. GPO, 1921.

MLA (9th ed.) Citation

United States. Navy Department. Bureau of Navigation. One Finger System, for Use of Hospital Corps Men Assigned to Duty at Recruiting Stations. U.S. GPO, 1921.