CASSELL, ERIC J. "The Clinical Method and the Patient." Doctoring: The Nature of Primary Care Medicine. : Oxford University Press, 1997-07-24. Oxford Scholarship Online. 2011-11-17. Date Accessed 25 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195113235.001.0001/acprof-9780195113235-chapter-6>.
CASSELL, E.(1997-07-24). The Clinical Method and the Patient. In Doctoring: The Nature of Primary Care Medicine. : Oxford University Press. Retrieved 25 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195113235.001.0001/acprof-9780195113235-chapter-6.
CASSELL, ERIC J. "The Clinical Method and the Patient." In Doctoring: The Nature of Primary Care Medicine. : Oxford University Press, 1997-07-24. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195113235.001.0001/acprof-9780195113235-chapter-6.
CASSELL EJ. The Clinical Method and the Patient. In: Cassell EJ. Doctoring: The Nature of Primary Care Medicine. Oxford University Press; 1997. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780195113235.001.0001/acprof-9780195113235-chapter-6. Accessed May 25, 2013.