References
- Aronson A.E., Bless D.M. 2009. Clinical Voice Disorders. Fourth Edition. NY, USA: Thieme.
- Butcher P., Elias A., Cavalli L. 2007. Understanding and Treating Psychogenic Voice Disorder: A CBT Framework. Chichester, UK: John Wiley & Sons Ltd.
- Mathieson L. 2001. Greene & Mathieson's The Voice & its Disorders. Sixth Edition. London, UK: Whurr Publications.