The challenge of effective speaking 
Verderber, Rudolph F. 
 - sixth edition. 
 -  Wadsworth Publishing Company.  1985 
 - xiii, 400 pages. 
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<br/><br/><label>ISBN: </label>0-534-03885-9 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public speaking.
<br/><br/><label>Dewey Class. No.: </label>808.51 V58 1985