LONDON, W. THOMAS, and KATHERINE A. MCGLYNN. "Liver Cancer." Cancer Epidemiology and Prevention. : Oxford University Press, 2006-10-12. Oxford Scholarship Online. 2009-09-01. Date Accessed 20 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-39>.
LONDON, W., & MCGLYNN, K.(2006-10-12). Liver Cancer. In Cancer Epidemiology and Prevention. : Oxford University Press. Retrieved 20 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195149616.001.0001/acprof-9780195149616-chapter-39.
LONDON, W. THOMAS, and KATHERINE A. MCGLYNN. "Liver 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-39.
LONDON WT, MCGLYNN KA. Liver 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-39. Accessed May 20, 2013.