References
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Gleason, J.B. (1997). The development of language (4th ed.). Boston: Allyn and Bacon.
Kretschmer Jr., R.R., Dretschmer,L.W. (1978). Language development and intervention with the hearing impaired. Baltimore: University Park Press.
Luetke-Stahlman, B. (1993). Research based language intervention strategies adapted for deaf and hard of hearing children. American annuals of the deaf, 138, 404-409.