Cita APA (7th ed.)

Gilbert, J. B. (1991). Perfect cities: Chicago's utopias of 1893. University of Chicago Press.

Cita Chicago (17th ed.)

Gilbert, James Burkhart. Perfect Cities: Chicago's Utopias of 1893. Chicago: University of Chicago Press, 1991.

Cita MLA (9th ed.)

Gilbert, James Burkhart. Perfect Cities: Chicago's Utopias of 1893. University of Chicago Press, 1991.