Source:
The South African journal of communication disorders = Die Suid-Afrikaanse tydskrif vir Kommunikasieafwykings [S Afr J Commun Disord] 1999; Vol. 46, pp. 65-72.Publisher: AOSIS Publishing Country of Publication: South Africa NLM ID: 7805099 Publication Model: Print Cited Medium: Print ISSN: 0379-8046