Figueredo, Aurelio José, Paul Robert Gladden, and Zachary Hohman. "The evolutionary psychology of criminal behaviour." Applied Evolutionary Psychology. : Oxford University Press, 2011-11-24. Oxford Scholarship Online. 2012-01-19. Date Accessed 18 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199586073.001.0001/acprof-9780199586073-chapter-0013>.
Figueredo, A., Gladden, P., & Hohman, Z.(2011-11-24). The evolutionary psychology of criminal behaviour. In Applied Evolutionary Psychology. : Oxford University Press. Retrieved 18 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199586073.001.0001/acprof-9780199586073-chapter-0013.
Figueredo, Aurelio José, Paul Robert Gladden, and Zachary Hohman. "The evolutionary psychology of criminal behaviour." In Applied Evolutionary Psychology. : Oxford University Press, 2011-11-24. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199586073.001.0001/acprof-9780199586073-chapter-0013.
Figueredo AJ, Gladden PR, Hohman Z. The evolutionary psychology of criminal behaviour. In: Roberts SC. Applied Evolutionary Psychology. Oxford University Press; 2011. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199586073.001.0001/acprof-9780199586073-chapter-0013. Accessed June 18, 2013.