Spergel, I. A. (1995). The youth gang problem: A community approach. Oxford University Press.
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Dyfyniad Arddull Chicago
Spergel, Irving A. The Youth Gang Problem: A Community Approach. New York: Oxford University Press, 1995.
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Dyfyniad MLA
Spergel, Irving A. The Youth Gang Problem: A Community Approach. Oxford University Press, 1995.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.