APA (7th ed.) Citation
Siegel, F. F. (2000). The future once happened here: New York, D.C., L.A., and the fate of America's big cities (1st paperback ed.). Encounter Books.
Chicago Style (17th ed.) Citation
Siegel, Frederick F. The Future Once Happened Here: New York, D.C., L.A., and the Fate of America's Big Cities. 1st paperback ed. San Francisco: Encounter Books, 2000.
MLA (9th ed.) Citation
Siegel, Frederick F. The Future Once Happened Here: New York, D.C., L.A., and the Fate of America's Big Cities. 1st paperback ed. Encounter Books, 2000.
Warning: These citations may not always be 100% accurate.