Carrieri-Kohlman, Virginia, and Deborah Dudgeon. "Multidimensional assessment of dyspnea." Dyspnoea in Advanced Disease: A guide to clinical management. : Oxford University Press, 2005-11-24. Oxford Scholarship Online. 2011-11-17. Date Accessed 18 May. 2013 <http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198530039.001.0001/acprof-9780198530039-chapter-2>.
Carrieri-Kohlman, V., & Dudgeon, D.(2005-11-24). Multidimensional assessment of dyspnea. In Dyspnoea in Advanced Disease: A guide to clinical management. : Oxford University Press. Retrieved 18 May. 2013, from http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198530039.001.0001/acprof-9780198530039-chapter-2.
Carrieri-Kohlman, Virginia, and Deborah Dudgeon. "Multidimensional assessment of dyspnea." In Dyspnoea in Advanced Disease: A guide to clinical management. : Oxford University Press, 2005-11-24. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198530039.001.0001/acprof-9780198530039-chapter-2.
Carrieri-Kohlman V, Dudgeon D. Multidimensional assessment of dyspnea. In: Booth S, Dudgeon D. Dyspnoea in Advanced Disease: A guide to clinical management. Oxford University Press; 2005. http://www.oxfordscholarship.com/view/10.1093/acprof:oso/9780198530039.001.0001/acprof-9780198530039-chapter-2. Accessed May 18, 2013.