1. American College of Physicians. (2007). Delirium. Philadelphia: Author.
2. Canadian Coalition for Seniors' Mental Health. (2006). National guidelines for seniors' mental health: The assessment and treatment of delirium. Retrieved from www.ccsmh.ca
3. Carpenito-Moyet L. J. (2000). Nursing diagnosis: Application to clinical practice (8th ed.). Philadelphia: Lippincott.
4. First M. B. (2000). Delirium. In Diagnostic and statistical manual (4th ed.). Washington DC: American Psychiatric Association.
5. Hazzard W. R. (2003). Principles of geriatric medicine and gerontology (5th ed.). New York: McGraw-Hill.