APA (7th ed.) Citation

United States. Army. Chemical Warfare Service. (1921). Modifications in tables of organization, 1920-1921 (Chemical Warfare Service). [publisher not identified].

Chicago Style (17th ed.) Citation

United States. Army. Chemical Warfare Service. Modifications in Tables of Organization, 1920-1921 (Chemical Warfare Service). Washington: [publisher not identified], 1921.

MLA (9th ed.) Citation

United States. Army. Chemical Warfare Service. Modifications in Tables of Organization, 1920-1921 (Chemical Warfare Service). [publisher not identified], 1921.

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