APA-viite (7. p.)
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-viite (17. p.)
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-viite (9. p.)
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.
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