1. American Psychiatric Association. 1994. Diagnostic and statistical manual of mental disorders, 4th ed. Washington, DC: American Psychiatric Association.
2. MMR and autism: further evidence against a causal association
3. Institute of Medicine. 1991. Adverse effects of pertussis and rubella vaccines. Washington, DC: National Academy Press.
4. Institute of Medicine. 2001. Immunization safety review: measles-mumps-rubella vaccine and autism. editors. Washington, DC: National Academy Press.