Wiesenthal, David L, and Deanna M Singhal. "Evolutionary psychology, demography, and driver safety research: a theoretical synthesis." Applied Evolutionary Psychology. : Oxford University Press, 2011-11-24. Oxford Scholarship Online. 2012-01-19. Date Accessed 20 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199586073.001.0001/acprof-9780199586073-chapter-0024>.
Wiesenthal, D., & Singhal, D.(2011-11-24). Evolutionary psychology, demography, and driver safety research: a theoretical synthesis. In Applied Evolutionary Psychology. : Oxford University Press. Retrieved 20 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780199586073.001.0001/acprof-9780199586073-chapter-0024.
Wiesenthal, David L, and Deanna M Singhal. "Evolutionary psychology, demography, and driver safety research: a theoretical synthesis." 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-0024.
Wiesenthal DL, Singhal DM. Evolutionary psychology, demography, and driver safety research: a theoretical synthesis. 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-0024. Accessed May 20, 2013.