Van Riper, C. : Speech Correction: Principles and Methods, ed. 4. Englewood Cliffs, Prentice-Hall, Inc., 1963, p. 36.
2.
Heaver, L.: Psychiatric observations on the per. sonality structure of patients with habitual dysphonia. Logos1: 21, Oct. 1958.
3.
Rubin, H.J. and Lehrhoff, I.: Pathogenesis and treatment of vocal nodules. J. Speech Hearing Dis.27: 150, 1962.
4.
Arnold, G.E.: Vocal nodules and polyps; laryngeal tissue reaction to habitual hyperkinetic dysphonia. Ibid. p. 205.
5.
Greene, M.C.: The Voice and Its Disorders, ed. 2. New York, The Macmillan Co., 1964 .
6.
Withers, B.T. and Dawson, M.H.: Psychological aspects; treatment of vocal nodule cases. Texas State J. Med.56: 43, 1960.
7.
Wilson, K.D. : Children with vocal nodules. J. Speech Hearing Dis.26: 19, 1961.
8.
Myerson, M.C.: The Human Larynx. Springfield, Charles C Thomas, 1964.
9.
Brodnitz, F.S.: Vocal Rehabilitation: A Manual Prepared for the Use of Graduates in Medicine. American Academy of Ophthalmology and Otolaryngology. Rochester, Whiting Press, Inc., 1959.
10.
Jackson, C. and Jackson, C. L. (ed.): Diseases of the Nose, Throat,and Ear. Philadelphia, W. B. Saunders Co., 1945.
11.
Brodnitz, F.S. and Froeschels, E.: Treatment of nodules of the vocal cords by chewing method. Arch. Otolaryng.59: 560, 1954.