Cita APA (7a ed.)

USA, Department of Justice, Hoffman, P. B., & USA Department of Justice. (1977). United States Parole Commission Research Unit: Research reports. U.S. Gov. Print. Office.

Cita Chicago Style (17a ed.)

USA, Department of Justice, Peter B. Hoffman, y USA Department of Justice. United States Parole Commission Research Unit: Research Reports. Washington, D.C: U.S. Gov. Print. Office, 1977.

Cita MLA (8a ed.)

USA, Department of Justice, et al. United States Parole Commission Research Unit: Research Reports. U.S. Gov. Print. Office, 1977.