1. Punishment to protection: Solitary confinement in the Washington State Penitentiary, 1966–1975;Barak (Glantz),1978
2. New horizons in criminology;Barnes,1952
3. Commentaries on the laws of England;Blackstone,1769
4. Corrections in America;Carter,1975
5. On the penitentiary system in the United States and its application in France;De Beaumont,1833