1. Diagnostic and statistical manual of mental disorders;American Psychiatric Association,1968
2. Diagnostic and statistical manual of mental disorders;American Psychiatric Association,1980
3. Diagnostic and statistical manual of mental disorders;American Psychiatric Association,1987
4. Demographic aspects of functional psychoses in Canada;Bland;Acta Psychiatr. Scand.,1977
5. The contemporary natural history of mental disorder in old age;Blessed;Br J. Psychiatry,1982