APA (7th ed.) Citation

United States. War Department. Engineer Department. (1940). Orders and Regulations, Army Corps of Engineers, Changes Chapter X-6. [s.n.].

Chicago Style (17th ed.) Citation

United States. War Department. Engineer Department. Orders and Regulations, Army Corps of Engineers, Changes Chapter X-6. [Washington]: [s.n.], 1940.

MLA (9th ed.) Citation

United States. War Department. Engineer Department. Orders and Regulations, Army Corps of Engineers, Changes Chapter X-6. [s.n.], 1940.