United States. Army. Corps of Engineers. (1934). Map of Chicago waterways. [United States Army, Corps of Engineers Office?].
Chicago Style (17th ed.) CitationUnited States. Army. Corps of Engineers. Map of Chicago Waterways. [Chicago, Ill.]: [United States Army, Corps of Engineers Office?], 1934.
MLA (8th ed.) CitationUnited States. Army. Corps of Engineers. Map of Chicago Waterways. [United States Army, Corps of Engineers Office?], 1934.
Warning: These citations may not always be 100% accurate.