(DSM-III).Diagnostic and statistical manual of mental disorders (3rd ed.). J.B.W. Williams (Ed.) Washington, D.C.: American Psychiatric Association.
(ICD-9-CM),International Classification of diseases, 9th Revision. Clinical Modification, Volumes 1 & 11. Ann Arbor, Michigan: Commission on Professionals and Hospital Activities, 1980.
(CPT-4)Physicians current procedural terminiology, (4th ed.)Eight Update H.N. Schwinger, (Ed.) Monroe, Wisc.: American, 1982.