References
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- Grunwell P. PACS Picture Book. NFER-Nelson, Windsor 1987
- Grunwell P., Yavas M. Phonotactic restrictions in disordered child phonology: a case study. Clinical Linguistics and Phonetics 1988; 2: 1–16
- PRDS Group. The Phonetic Representation of Disordered Speech. The King's Fund, London 1983