References for "Natural supplements for mental health"
Freeman MP, et al. "Complementary and Alternative Medicine in Major Depressive Disorder: The American Psychiatric Association Task Force Report," Journal of Clinical Psychiatry (June 2010): Vol. 71, No. 6, pp. 669–81.
Kessler RC, et al. "The Use of Complementary and Alternative Therapies to Treat Anxiety and Depression in the United States," American Journal of Psychiatry (Feb. 2001): Vol. 158, No. 2, pp. 289–94.