References
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- Lindsley , Charles F. 1929 . “An Objective Study o£ the Respiratory Processes Accompanying Speech” . Quarterly Journal of Speech , XV : 42
- Bell , Alexander M. 1916 . Principles of Speech and Dictionary of Sounds , 15 Washington, D.C. : Volta Bureau .
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- Hay , Rosemary . 1934 . “Correct Breathing Habits for Children's Speech” . Quarterly Journal of Speech , XX : 98
- Swift , W. B. 1915 . “The Hygiene of the Voice Before Debates” . Quarterly Journal of Public Speaking , I : 114