1. American Psychiatric Association. (1994). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: American Psychiatric Association.
2. American Psychiatric Association. (2000). Diagnostic and statistical manual of mental disorders (4th ed.). Washington, DC: American Psychiatric Association.
3. American Psychiatric Association. (2013). Diagnostic and statistical manual of mental disorders (5th ed.). Arlington: American Psychiatric Association.
4. Averill, R. F., Mullin, R. L., Steinbeck, B. A., Goldfield, N. I., Grant, T. M., & Butler, R. R. (2009). Development of the ICD-10 procedure coding system (ICD-10-PCS). https://www.cms.gov/Medicare/Coding/ICD10/downloads/pcs_final_report2012.pdf. Accessed 28 Dec 2015.
5. Gold, L. H. (2014). DSM-5 and the assessment of functioning: The World Health Organization Disability Assessment Schedule 2.0 (WHODAS 2.0). The Journal of the American Academy of Psychiatry and the Law, 42, 173–181.