GEORGE, C. J. (1974). Urban ecology: In search of an asphalt rose. McGraw-Hill.
Cita Chicago (17th ed.)GEORGE, Carl J. Urban Ecology: In Search of an Asphalt Rose. New York: McGraw-Hill, 1974.
Cita MLA (9th ed.)GEORGE, Carl J. Urban Ecology: In Search of an Asphalt Rose. McGraw-Hill, 1974.
Atenció: Aquestes cites poden no estar 100% correctes.