Morrison, M. (2009). Clear Speech: Practical Speech Correction and Voice Improvement. A & C Black Publishers Ltd.
Chicagoスタイル(17版)引用形式Morrison, Malcolm. Clear Speech: Practical Speech Correction and Voice Improvement. A & C Black Publishers Ltd, 2009.
MLA(9版)引用形式Morrison, Malcolm. Clear Speech: Practical Speech Correction and Voice Improvement. A & C Black Publishers Ltd, 2009.
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