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3.
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4.
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5.
Fymbo, L.H.: The relation of, malocclusion of the teeth to defects of speech. Arch. Speech1: 204, 1936.
6.
Powers, M.H. : Functional disorders of articulation-symptomatology and etiology. In Handbook of Speech Pathology. L. E. Travis, ed. New York, Appleton-Century-Crofts, Inc., 1957, p. 732.
7.
Templin, M.: Speech development in the young child. 3. The development of certain language skills in children. Journal of Speech and Hearing Disorders17: 280, 1952.
8.
Irwin, O.C.: Speech development in the young child. 2. Some factors related to the speech development of the infant and young child. Ibid. p. 269.
9.
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10.
Berkey, R.E. : A study of certain factors related to retardation of speech. journal of Speech Disorders7: 223, 1942.
11.
McAllister, M.G. : A study of the relationship between defects of articulation in speech and emotional instability in elementary school children. Unpublished Master's Thesis. University of Washington, 1948.
12.
Anders, Q.M.: A study of the personal and social adjustment of children with functional articulatory defects. Unpublished Master's Thesis. University of Wisconsin, 1945.
13.
Powers, M.D. : Clinical and educational procedures in functional disorders of articulation. In Handbook of Speech Pathology . Op. cit. ref. 6, p. 784.
14.
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