Hagan, J. (1997). Mean streets: Youth crime and homelessness. Cambridge.
芝加哥风格引文Hagan, John. Mean Streets: Youth Crime and Homelessness. New York: Cambridge, 1997.
MLA引文Hagan, John. Mean Streets: Youth Crime and Homelessness. Cambridge, 1997.
警告：这些引文格式不一定是100％准确.