Human Communication Disorders :  an Introduction / 
Shames George ; Noma Anderson  
 - 6th ed. 
 - Boston :  Allyn & Bacon ,  2002. 
 - xv,663 p,: 
<br/><br/><label>ISBN: </label>02053377066 
<br/><br/><label>LC Class. No.: </label>RC423  / .S52  2002