Clapp, J. A. (1984). The city: A dictionary of quotable thoughts on cities and urban life (Second edition.). The Center for Urban Policy Research, Rutgers University.
Dyfyniad Arddull ChicagoClapp, James A. The City: A Dictionary of Quotable Thoughts on Cities and Urban Life. Second edition. New Brunswick (U.S.A.): The Center for Urban Policy Research, Rutgers University, 1984.
Dyfyniad MLAClapp, James A. The City: A Dictionary of Quotable Thoughts on Cities and Urban Life. Second edition. The Center for Urban Policy Research, Rutgers University, 1984.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.