APA (7th ed.) Citation

United States. Army. American Expeditionary Forces. Ring sight. Imp. Gilbert-Clarey.

Chicago Style (17th ed.) Citation

United States. Army. American Expeditionary Forces. Ring Sight. [France]: Imp. Gilbert-Clarey.

MLA (9th ed.) Citation

United States. Army. American Expeditionary Forces. Ring Sight. Imp. Gilbert-Clarey.

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