1. Aeschylus (458 BCE). The Eumenides. Orange Street Press Classics.
2. American Psychiatric Association (1987). Diagnostic and statistical manual of mental disorders (DSM-III-R) (3rd revised edition). Washington, DC: APA.
3. American Psychiatric Association (1994). Diagnostic and statistical manual of mental disorders (DSM-IV) (4th edition). Washington, DC: APA.
4. American Psychiatric Association (2000). Diagnostic and statistical manual of mental disorders, text revision (DSM-IV-TR) (4th edition). Washington, DC: APA.
5. American Psychiatric Association (2013). Diagnostic and statistical manual of mental disorders (DSM 5). Washington, DC: APA.