Cita APA (7a ed.)

Spelman, W., & Brown, D. K. (1984). Calling the Police: Citizen Reporting of Serious Crime. United States Department of Justice, National Institute of Justice.

Cita Chicago Style (17a ed.)

Spelman, William, y Dale K. Brown. Calling the Police: Citizen Reporting of Serious Crime. United States Department of Justice, National Institute of Justice, 1984.

Cita MLA (9a ed.)

Spelman, William, y Dale K. Brown. Calling the Police: Citizen Reporting of Serious Crime. United States Department of Justice, National Institute of Justice, 1984.