Koper, C. S. (2014). Crime Gun Risk Factors: Buyer, Seller, Firearm, and Transaction Characteristics Associated with Gun Trafficking and Criminal Gun Use. Journal of quantitative criminology, 30(2), 285-315. doi:10.1007/s10940-013-9204-3
Cita Chicago Style (17a ed.)Koper, Christopher S. "Crime Gun Risk Factors: Buyer, Seller, Firearm, and Transaction Characteristics Associated with Gun Trafficking and Criminal Gun Use." Journal of Quantitative Criminology 30, no. 2 (2014): 285-315. https://doi.org/10.1007/s10940-013-9204-3.
Cita MLA (9a ed.)Koper, Christopher S. "Crime Gun Risk Factors: Buyer, Seller, Firearm, and Transaction Characteristics Associated with Gun Trafficking and Criminal Gun Use." Journal of Quantitative Criminology, vol. 30, no. 2, 2014, pp. 285-315, https://doi.org/10.1007/s10940-013-9204-3.