Koper, C. S. (2002). Federal legislation and gun markets: How much have recent reforms of the federal firearms licensing system reduced criminal gun suppliers? Criminology & public policy, 1(2), 151-178. doi:10.1111/j.1745-9133.2002.tb00082.x
Cita Chicago Style (17a ed.)Koper, Christopher S. "Federal Legislation and Gun Markets: How Much Have Recent Reforms of the Federal Firearms Licensing System Reduced Criminal Gun Suppliers?" Criminology & Public Policy 1, no. 2 (2002): 151-178. https://doi.org/10.1111/j.1745-9133.2002.tb00082.x.
Cita MLA (8a ed.)Koper, Christopher S. "Federal Legislation and Gun Markets: How Much Have Recent Reforms of the Federal Firearms Licensing System Reduced Criminal Gun Suppliers?" Criminology & Public Policy, vol. 1, no. 2, 2002, pp. 151-178, https://doi.org/10.1111/j.1745-9133.2002.tb00082.x.