Smeeth, L., Cook, C., Fombonne, P. E., Heavey, L., Rodrigues, L. C., Smith, P. G., & Hall, A. J. (2004). Rate of first recorded diagnosis of autism and other pervasive developmental disorders in United Kingdom general practice, 1988 to 2001. BioMed Central.

Smeeth, Liam, Claire Cook, Professor Eric Fombonne, Lisa Heavey, Laura C. Rodrigues, Peter G. Smith, و Andrew J. Hall. Rate of First Recorded Diagnosis of Autism and Other Pervasive Developmental Disorders in United Kingdom General Practice, 1988 to 2001. BioMed Central, 2004.

Smeeth, Liam, et al. Rate of First Recorded Diagnosis of Autism and Other Pervasive Developmental Disorders in United Kingdom General Practice, 1988 to 2001. BioMed Central, 2004.