APA (7th ed.) Citation

Chicago. Zoning Commission. (1922). [Chicago zoning survey maps]. Chicago Zoning Commission.

Chicago Style (17th ed.) Citation

Chicago. Zoning Commission. [Chicago Zoning Survey Maps]. [Chicago: Chicago Zoning Commission, 1922.

MLA (8th ed.) Citation

Chicago. Zoning Commission. [Chicago Zoning Survey Maps]. Chicago Zoning Commission, 1922.

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