المؤلف
- New Zealand Speech-Language Therapists' Association نتيجة 2
- American Speech-Language-Hearing Association نتيجة 1
- College of Speech and Language Therapists نتيجة 1
- N.Z. Speech Therapists' Association نتيجة 1
- National Association of Teachers of Speech (U.S.) نتيجة 1
- New Zealand Speech Board نتيجة 1
- Royal College of Speech & Language Therapists نتيجة 1
- Speech Association of America نتيجة 1
- Speech Communication Association نتيجة 1