A Prisoner?. [2010-03-11]. (原始内容存档于2018-03-05). MinnesotaDepartmentofCorrections. The Effects of Prison Visitation on Offender Recidivism (PDF). [2012-02-11]
國家矯正研究所(英语:National Institute ofCorrections)(National Institute ofCorrections) 美國國安司(英语:United States Departmentof Justice National Security Division)(National