APA (7th ed.) Citation

Chicago Public Library. (1969). Map of the Chicago Public Library system. Chicago Public Library].

Chicago Style (17th ed.) Citation

Chicago Public Library. Map of the Chicago Public Library System. [Chicago: Chicago Public Library], 1969.

MLA (8th ed.) Citation

Chicago Public Library. Map of the Chicago Public Library System. Chicago Public Library], 1969.

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