@article{ref1,
title="Predictors of gang violence: The impact of drugs and guns on police perceptions in nine states",
journal="Journal of gang research",
year="1995",
author="Quinn, James F. and Downs, William T.",
volume="2",
number="3",
pages="15-27",
abstract="<p>[Abstract unavailable]</p>",
language="en",
issn="1079-3062",
doi="Article",
url="http://dx.doi.org/Article"
}