APA-ийн эшлэл(7 дахь хэвлэлт)

Ludwig, J., & Cook, P. J. (2003). Evaluating gun policy: Effects on crime and violence. Brookings Institution Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Ludwig, Jens, ба Philip J. Cook. Evaluating Gun Policy: Effects on Crime and Violence. Washington, D.C.: Brookings Institution Press, 2003.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Ludwig, Jens, ба Philip J. Cook. Evaluating Gun Policy: Effects on Crime and Violence. Brookings Institution Press, 2003.