APA (7th ed.) Citation

United States. War Department. (1918). Amendment to Circular No. 90, War Department, 1918. [publisher not identified].

Chicago Style (17th ed.) Citation

United States. War Department. Amendment to Circular No. 90, War Department, 1918. Washington: [publisher not identified], 1918.

MLA (9th ed.) Citation

United States. War Department. Amendment to Circular No. 90, War Department, 1918. [publisher not identified], 1918.