Cita APA (7a ed.)

Farrell, W. J. (1989). Varieties of punishment: Convict labor and the transformation of the American penal system. Univ. Microfilms Internat.

Cita Chicago Style (17a ed.)

Farrell, William J. Varieties of Punishment: Convict Labor and the Transformation of the American Penal System. Ann Arbor, Mich: Univ. Microfilms Internat, 1989.

Cita MLA (9a ed.)

Farrell, William J. Varieties of Punishment: Convict Labor and the Transformation of the American Penal System. Univ. Microfilms Internat, 1989.