APA (7th ed.) Citation

United States. Army. American Expeditionary Forces. (1918). Artillery firing. General Headquarters, American Expeditionary Forces, France.

Chicago Style (17th ed.) Citation

United States. Army. American Expeditionary Forces. Artillery Firing. [United States]: General Headquarters, American Expeditionary Forces, France, 1918.

MLA (9th ed.) Citation

United States. Army. American Expeditionary Forces. Artillery Firing. General Headquarters, American Expeditionary Forces, France, 1918.

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