1. Allen, F.S., 1972. Allen’s Synonyms and Antonyms (Revised Motter, T.H.V.). Barnes and Noble, New York.
2. American Psychiatric Association, 1994. Diagnostic and Statistical Manual of Mental Disorders, 4th edn., (DSM-IV). APA, Washington, DC.
3. Affective disorders;Ashcroft,1978
4. Psychomotor retardation and agitation in depression: relationship to age, sex, and response to treatment;Avery;J. Affect. Disord.,1984
5. Strategies for diagnosing and treating agitation in the aging;Barnes;Geriatrics,1980