PLATZ, ELIZABETH A., and EDWARD GIOVANNUCCI. "Prostate Cancer." Cancer Epidemiology and Prevention. : Oxford University Press, 2006-10-12. Oxford Scholarship Online. 2009-09-01. Date Accessed 20 Jun. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-59>.
PLATZ, E., & GIOVANNUCCI, E.(2006-10-12). Prostate Cancer. In Cancer Epidemiology and Prevention. : Oxford University Press. Retrieved 20 Jun. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-59.
PLATZ, ELIZABETH A., and EDWARD GIOVANNUCCI. "Prostate Cancer." In Cancer Epidemiology and Prevention. : Oxford University Press, 2006-10-12. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-59.
PLATZ EA, GIOVANNUCCI E. Prostate Cancer. In: Schottenfeld D, Fraumeni JF. Cancer Epidemiology and Prevention. Oxford University Press; 2006. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-59. Accessed June 20, 2013.