Ewing, Charles Patrick. "Civil Commitment of Sex Offenders." Justice Perverted: Sex Offense Law, Psychology, and Public Policy. : Oxford University Press, 2011-02-16. Oxford Scholarship Online. 2011-05-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199732678.001.0001/acprof-9780199732678-chapter-001>.
Ewing, C.(2011-02-16). Civil Commitment of Sex Offenders. In Justice Perverted: Sex Offense Law, Psychology, and Public Policy. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199732678.001.0001/acprof-9780199732678-chapter-001.
Ewing, Charles Patrick. "Civil Commitment of Sex Offenders." In Justice Perverted: Sex Offense Law, Psychology, and Public Policy. : Oxford University Press, 2011-02-16. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199732678.001.0001/acprof-9780199732678-chapter-001.
Ewing CP. Civil Commitment of Sex Offenders. In: Patrick Ewing C. Justice Perverted: Sex Offense Law, Psychology, and Public Policy. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199732678.001.0001/acprof-9780199732678-chapter-001. Accessed May 23, 2013.