Cita APA (7a ed.)

Cohen, J., Singh, P., & Engberg, J. B. (1999). Effects of Crime Gun Prevalence on Homicide Rates. Carnegie Mellon University.

Cita Chicago Style (17a ed.)

Cohen, Jacqueline, Piyusha Singh, y John Barker Engberg. Effects of Crime Gun Prevalence on Homicide Rates. Carnegie Mellon University, 1999.

Cita MLA (9a ed.)

Cohen, Jacqueline, et al. Effects of Crime Gun Prevalence on Homicide Rates. Carnegie Mellon University, 1999.