Stemple, J. C. (1993). Voice therapy: Clinical studies. Mosby Year Book.
Lua i Stíl Chicago (17ú heag.)Stemple, Joseph C. Voice Therapy: Clinical Studies. St. Louis: Mosby Year Book, 1993.
Lua MLA (9ú heag.)Stemple, Joseph C. Voice Therapy: Clinical Studies. Mosby Year Book, 1993.
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