APA (7th ed.) Citation

Young, P. W., & Van Tilburg, M. Map of Chicago showing ward boundaries and territorial annexations as of 1893. [publisher not identified].

Chicago Style (17th ed.) Citation

Young, Philip W., and Minna Van Tilburg. Map of Chicago Showing Ward Boundaries and Territorial Annexations as of 1893. [Place of publication not identified]: [publisher not identified].

MLA (8th ed.) Citation

Young, Philip W., and Minna Van Tilburg. Map of Chicago Showing Ward Boundaries and Territorial Annexations as of 1893. [publisher not identified].