APA (7th ed.) Citation

Chicago Plan Commission. (1939). City of Chicago community map showing community & ward boundaries. [Chicago Plan Commission].

Chicago Style (17th ed.) Citation

Chicago Plan Commission. City of Chicago Community Map Showing Community & Ward Boundaries. [Chicago]: [Chicago Plan Commission], 1939.

MLA (8th ed.) Citation

Chicago Plan Commission. City of Chicago Community Map Showing Community & Ward Boundaries. [Chicago Plan Commission], 1939.

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