Dorman, Janice S., and Donald R. Mattison. "Epidemiology, molecular biology, and public health." Genetics and Public Health in the 21st Century: Using Genetic Information to Improve Health and Prevent Disease. : Oxford University Press, 2000-09-21. Oxford Scholarship Online. 2009-09-01. Date Accessed 21 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128307.001.0001/acprof-9780195128307-chapter-6>.
Dorman, J., & Mattison, D.(2000-09-21). Epidemiology, molecular biology, and public health. In Genetics and Public Health in the 21st Century: Using Genetic Information to Improve Health and Prevent Disease. : Oxford University Press. Retrieved 21 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128307.001.0001/acprof-9780195128307-chapter-6.
Dorman, Janice S., and Donald R. Mattison. "Epidemiology, molecular biology, and public health." In Genetics and Public Health in the 21st Century: Using Genetic Information to Improve Health and Prevent Disease. : Oxford University Press, 2000-09-21. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128307.001.0001/acprof-9780195128307-chapter-6.
Dorman JS, Mattison DR. Epidemiology, molecular biology, and public health. In: Khoury MJ, Burke W, Thomson E. Genetics and Public Health in the 21st Century: Using Genetic Information to Improve Health and Prevent Disease. Oxford University Press; 2000. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195128307.001.0001/acprof-9780195128307-chapter-6. Accessed May 21, 2013.