Classification manual for voice disorders-I/ 
Verdolini,Katherine 
 - 1st ed. 
 - New Jersey:  Lawrence Erlbaum Associates Publishers,  2006. 
 - 284 p. 
<br/><br/><label>ISBN: </label>9780805856316 
<br/><br/><label>Dewey Class. No.: </label>616.855  / VER/C