Cita APA (7a ed.)

Keaton, L. W. (1988). Cruel and unusual punishment: An evolving standard. Univ. Microfilms International.

Cita Chicago Style (17a ed.)

Keaton, Lester W. Cruel and Unusual Punishment: An Evolving Standard. Ann Arbor, Mich: Univ. Microfilms International, 1988.

Cita MLA (9a ed.)

Keaton, Lester W. Cruel and Unusual Punishment: An Evolving Standard. Univ. Microfilms International, 1988.