Cita APA (7th ed.)

George, C. J., & McKinley, D. (1974). Urban ecology: In search of an asphalt rose. McGraw-Hill.

Cita Chicago (17th ed.)

George, Carl J., i Daniel McKinley. Urban Ecology: In Search of an Asphalt Rose. New York: McGraw-Hill, 1974.

Cita MLA (9th ed.)

George, Carl J., i Daniel McKinley. Urban Ecology: In Search of an Asphalt Rose. McGraw-Hill, 1974.