1. S. Avery (2000 ). Rural health care at risk: California small and rural hospitals. California State Rural Health Association 1-4. Retrieved fromhttp://www.csrha.org/html/rhc_at_risk.html.
2. D. S. Charney, H. L. Miller, J. Licinio, R. Salomon, A. F. Schatzberg, and C. B. Nemeroff (1995 ). In, Textbook of psychopharmacology (pp.575 -601 ). American Psychiatric Press: Washington, DC.
3. Prevalence, nature, and comorbidity of depressive disorders in primary care
4. Evaluation of a training package in the assessment and management of depression in primary care