Diagnostic and statistical manual of mental disorders :
DSM-IV.

APA Citation

American Psychiatric Association. Task Force on Nomenclature and Statistics., American Psychiatric Association. Task Force on DSM-IV., American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders: DSM-IV. 4th ed. Washington, DC: American Psychiatric Association.

MLA Citation

American Psychiatric Association. Task Force on Nomenclature and Statistics, American Psychiatric Association. Task Force on DSM-IV, and American Psychiatric Association. Diagnostic And Statistical Manual of Mental Disorders: DSM-IV. 4th ed. Washington, DC: American Psychiatric Association, 1994.

Warning: These citations may not always be complete (especially for serials).