MADELEINE, MARGARET M., and JANET R. DALING. "Cancers of the Vulva and Vagina." Cancer Epidemiology and Prevention. : Oxford University Press, 2006-10-12. Oxford Scholarship Online. 2009-09-01. Date Accessed 22 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-55>.
MADELEINE, M., & DALING, J.(2006-10-12). Cancers of the Vulva and Vagina. In Cancer Epidemiology and Prevention. : Oxford University Press. Retrieved 22 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-55.
MADELEINE, MARGARET M., and JANET R. DALING. "Cancers of the Vulva and Vagina." 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-55.
MADELEINE MM, DALING JR. Cancers of the Vulva and Vagina. 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-55. Accessed May 22, 2013.