| (Berger, 1970) Kenneth Walter Berger, Hearing Aid: Its Operation and Development Richmond : National Hearing Aid Society, 1970 | |
(Sandlin, 2000) Robert E. Sandlin, Textbook of Hearing aid amplification San Diego : Cengage Learning, 2000 (Valente, 2002) Michael Valente, Hearing aids: standards, options and limitations New York : Thieme Stuttgart New York, 2002 (2nd edition) (Marcia, 2002) Marcia B. Dugan, Living with Hearing Loss Washington : Gallaudet University Press, 2002 |
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