Morrison, M. (2009). Clear Speech: Practical Speech Correction and Voice Improvement. A & C Black Publishers Ltd.
芝加哥风格引文Morrison, Malcolm. Clear Speech: Practical Speech Correction and Voice Improvement. A & C Black Publishers Ltd, 2009.
MLA引文Morrison, Malcolm. Clear Speech: Practical Speech Correction and Voice Improvement. A & C Black Publishers Ltd, 2009.
警告：这些引文格式不一定是100％准确.