1. Pindzola, R. H. (1987). The voice assessment protocol for children and adults. Austin, TX: Pro-Ed.
2. Lomas, J. , Pickard, L. , Bester, S. et al. (1989). The communicative effectiveness index: development and psychometric evaluation of a functional communication measure for adult aphasia. Journal of Speech and Hearing Disorders, 54, 113–24.
3. LaPointe, L. L. & Horner, J. (1998). Reading Comprehension Battery for Aphasia (2nd edn.). Austin, TX: Pro-Ed.
4. Frattali, C. M. (Ed.). (1998). Measuring outcomes in speech-language pathology. New York: Thieme.
5. Bishop, D. (2003). Test for reception of grammar, Version 2. London: Harcourt Assessment.