Duhl, L. J. (1963). The urban condition: People and policy in the metropolis. New York: Basic Books.
Παραπομπή Chicago StyleDuhl, Leonard J. The Urban Condition: People and Policy in the Metropolis. New York: Basic Books, 1963.
Παραπομπή MLADuhl, Leonard J. The Urban Condition: People and Policy in the Metropolis. New York: Basic Books, 1963.
Πρόσοχή: Οι παραπομπές μπορεί να μην είναι 100% ακριβείς.