Depressive Disorders. Diagnostic and Statistical Manual of Mental Disorders. 5th ed. Washington, D.C.: American Psychiatric Association; 2013.
What Is Depression? American Psychiatric Association. http://www.psychiatry.org/patients-families/depression/what-is-depression. March 2015. Accessed July 2016.
National Institutes of Health. Depression. National Institute of Mental Health. http://www.nimh.nih.gov/health/publications/depression/index.shtml#pub1. Revised 2011. Accessed July 2016.
National Alliance on Mental Illness. (2010) A family guide: What families should know about adolescent depression. http://www.nami.org. 2010. Accessed July 2016.
National Institute of Mental Health (NIMH), part of the National Institutes of Health (NIH). Depression what you need to know https://www.nimh.nih.gov/health/publications/depression-what-you-need-to-know-12-2015/index.shtml. Accessed July 2016.