Familicidal Hearts: The Emotional Styles of 211 Killers. : Oxford University Press, 2010-01-12. Oxford Scholarship Online. 2010-05-01. Date Accessed 23 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195315417.001.0001/acprof-9780195315417>.
(2010-01-12). Familicidal Hearts: The Emotional Styles of 211 Killers. : Oxford University Press. Retrieved 23 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195315417.001.0001/acprof-9780195315417.
Familicidal Hearts: The Emotional Styles of 211 Killers. : Oxford University Press, 2010-01-12. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195315417.001.0001/acprof-9780195315417.
Websdale N. Familicidal Hearts: The Emotional Styles of 211 Killers. Oxford University Press; 2010. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195315417.001.0001/acprof-9780195315417. Accessed May 23, 2013.