1. American Psychiatric Association, 1980. Diagnostic and Statistical Manual of Mental Disorders, 3rd Edition (DSM-III). American Psychiatric Association, Washington, DC.
2. American Psychiatric Association, 1994. Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV). American Psychiatric Association, Washington, DC.
3. Rating Scales for Psychopathology, Health Status and Quality of Life. A Compendium on Documentation in Accordance with the DSM-III-R and WHO Systems;Bech,1993
4. The Bech, Hamilton and Zung Scales for Mood Disorders;Bech,1996
5. Quality of life instruments in depression;Bech;Eur. Psychiatry,1997