References
- Andrews G., Harris M. The syndrome of stuttering. Clinics in Developmental Medicine, No. 17, Heinemann, London 1964
- The handbook of early stuttering intervention, M. Onslow, A. Packman. Singular Publishing Group, San Diego, CA 1999
- Yairi E., Ambrose N. A longitudinal study of stuttering in children: A preliminary report. Journal of Speech and Hearing Research 1992; 35: 755–760