Cita APA (7a ed.)

Blumstein, A., & Heinz, H. J. (1995). Youth Violence, Guns and the Illicit-Drug Industry. United States Department of Justice, National Institute of Justice.

Cita Chicago Style (17a ed.)

Blumstein, Alfred, y H. John Heinz. Youth Violence, Guns and the Illicit-Drug Industry. United States Department of Justice, National Institute of Justice, 1995.

Cita MLA (9a ed.)

Blumstein, Alfred, y H. John Heinz. Youth Violence, Guns and the Illicit-Drug Industry. United States Department of Justice, National Institute of Justice, 1995.