Hahner, Jeffrey C. <br/><br/>
Speaking clearly :  improving voice and diction / 
Jeffrey C. Hahner, Martin A. Sokoloff, Sandra L. Salisch. 
 - 6th ed. 
 - Boston :  McGraw-Hill,  c2002. 
 - 393 p. :  ill. ;  23 cm. +  4 CD-ROMS (4 3/4 in.). 
<br/><br/>Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>0072397268 9780072397260 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English language--Diction.<br/>English language--Phonetics.<br/>Public speaking.<br/>Voice culture.