Cita APA (7a ed.)

Koper, C. S., Mayo-Wilson, E., & Smith, J. (2012). Police strategies to reduce illegal possession and carrying of firearms: Effects on gun crime. Campbell Systematic Reviews, 8(1), 1-53. doi:10.15496/publikation-6105

Cita Chicago Style (17a ed.)

Koper, Christopher S., Evan Mayo-Wilson, y John Smith. "Police Strategies to Reduce Illegal Possession and Carrying of Firearms: Effects on Gun Crime." Campbell Systematic Reviews 8, no. 1 (2012): 1-53. https://doi.org/10.15496/publikation-6105.

Cita MLA (9a ed.)

Koper, Christopher S., et al. "Police Strategies to Reduce Illegal Possession and Carrying of Firearms: Effects on Gun Crime." Campbell Systematic Reviews, vol. 8, no. 1, 2012, pp. 1-53, https://doi.org/10.15496/publikation-6105.