Hagan, J. (1997). Mean streets: Youth crime and homelessness. Cambridge.
Dyfyniad Arddull ChicagoHagan, John. Mean Streets: Youth Crime and Homelessness. New York: Cambridge, 1997.
Dyfyniad MLAHagan, John. Mean Streets: Youth Crime and Homelessness. Cambridge, 1997.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.