Merkoša sitáhtat
APA-čujuhus (7. p.)
ebrary, Inc, Ludwig, J., & Cook, P. J. (2003). Evaluating gun policy: Effects on crime and violence. Brookings Institution Press.
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Chicago-čujuhus (17. p.)
ebrary, Inc, Jens Ludwig, juo Philip J. Cook. Evaluating Gun Policy: Effects on Crime and Violence. Washington, D.C.: Brookings Institution Press, 2003.
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MLA-čujuhus (9. p.)
ebrary, Inc, et al. Evaluating Gun Policy: Effects on Crime and Violence. Brookings Institution Press, 2003.
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