1. Position statement: Prevention of communication disorders;ASHA,1988
2. The periodic health examination;Can Med Assoc J,1979
3. Syndromes with cleft lip and palate;Cohen;Cleft Palate J,1978
4. Laryngeal/voice findings in patients with velopharyngeal dysfunction;D'Antonio;Laryngoscope,1988
5. Communication skills of children with cleft lip and palate: A status report;Dalston,1990