American Academy of Family Physicians
http://www.aafp.org/afp/990700ap/225.html
American Institute of Stress
http://www.stress.org/
Geriatric Depression Scale
University of Stanford
http://www.stanford.edu/~yesavage/GDS.html
Helpguide.org
http://www.helpguide.org/mental/stress_signs.htm
National Alliance on Mental Illness
http://www.nami.org/Content/ContentGroups/Helpline1/Depression_in_Women.htm
National Institutes of Health
http://www.nlm.nih.gov/medlineplus/stress.html
Prevalence of depression and its treatment in an elderly population: the Cache County study
Steffens DC, Skoog I, Norton MC et al
Archives of General Psychiatry 200: 57(6) 601-7
The Cleveland Clinic Foundation
http://www.cchs.net/health/health-info/docs/2200/2268.asp?index=931326
The National Institute of Mental Health
http://www.nimh.nih.gov/healthinformation/depressionmenu.cfm