Fava M, Cassano P. Mood disorders: Major depressive disorder and dysthymic disorder. In: Stern TA, Rosenbaum JF, Fava M, Biederman J, Rauch SL, eds. Massachusetts General Hospital Comprehensive Clinical Psychiatry. 1st ed. Philadelphia, PA: Elsevier Mosby; 2008:chap 29.
American Psychiatric Association. Practice guideline for the treatment of patients with major depressive disorder, third edition. October 2010. Available at http://psychiatryonline.org/content.aspx?bookid=28§ionid=1667485. Accessed March 21, 2013.