Drills - Engineer Corps - Bridge Building - Military bridges in France. Pontoon bridge across Canal de L'Est Brieulles, France. Normal intervals for light traffic. Illustration taken from Operations Report, 7th Engineers

Chicago citation style
War Department. 1789-9/18/1947. Drills - Engineer Corps - Bridge Building - Military bridges in France. Pontoon bridge across Canal de L'Est Brieulles, France. Normal intervals for light traffic. Illustration taken from Operations Report, 7th Engineers. 1917-01-01/1918-12-31. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/31477231. (Accessed August 20, 2018.)
APA citation style
War Department. 1789-9/18/1947, (1917-01-01/1918-12-31) Drills - Engineer Corps - Bridge Building - Military bridges in France. Pontoon bridge across Canal de L'Est Brieulles, France. Normal intervals for light traffic. Illustration taken from Operations Report, 7th Engineers. Retrieved from the Digital Public Library of America, http://catalog.archives.gov/id/31477231
MLA citation style
War Department. 1789-9/18/1947. Retrieved from the Digital Public Library of America <http://catalog.archives.gov/id/31477231>.
Note: These citations are programmatically generated and may be incomplete.