Siegel, F. F. (1997). The future once happened here: New York, D.C., L.A., and the fate of America's big cities. Free Press.
Cita Chicago Style (17a ed.)Siegel, Frederick F. The Future Once Happened Here: New York, D.C., L.A., and the Fate of America's Big Cities. New York: Free Press, 1997.
Cita MLA (9a ed.)Siegel, Frederick F. The Future Once Happened Here: New York, D.C., L.A., and the Fate of America's Big Cities. Free Press, 1997.
Precaución: Estas citas no son 100% exactas.