Cita APA (7a ed.)

Johnson, E. W., & Miller, D. L. (2001). Chicago metropolis 2020: The Chicago plan for the twenty-first century. University of Chicago Press.

Cita Chicago Style (17a ed.)

Johnson, Elmer W., y Donald L. Miller. Chicago Metropolis 2020: The Chicago Plan for the Twenty-first Century. Chicago: University of Chicago Press, 2001.

Cita MLA (9a ed.)

Johnson, Elmer W., y Donald L. Miller. Chicago Metropolis 2020: The Chicago Plan for the Twenty-first Century. University of Chicago Press, 2001.