APA-čujuhus (7. p.)
Cook, P. J., & Ludwig, J. (2000). Gun violence: The real costs. Oxford University Press.
Chicago-čujuhus (17. p.)
Cook, Philip J., juo Jens Ludwig. Gun Violence: The Real Costs. Oxford ; New York: Oxford University Press, 2000.
MLA-čujuhus (9. p.)
Cook, Philip J., juo Jens Ludwig. Gun Violence: The Real Costs. Oxford University Press, 2000.
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