1. American Psychiatric Association (APA), 1994. Diagnostic and Statistical Manual of Mental Disorders, 4th edition, DSM-IV. American Psychiatric Association, Washington, DC.
2. American Psychiatric Association (APA), 1999. Practice Guideline for the Treatment of Patients with Delirium. American Psychiatric Association, Washington, DC, American Journal of Psychiatry 156 (5 Suppl. l) 1–20.
3. The experience of being confused;Andersson;Geriatric Nursing,1993
4. The meaning of acute confusional state from the perspective of elderly patients;Andersson;International Journal of Geriatric Psychiatry,2002
5. Acute confusional episodes in elderly orthopaedic patients;Andersson;International Journal of Nursing Studies,2002