Ray, Blair Spencer. <br/><br/>
Introduction to professional communication / 
Blair Spencer Ray. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  1989. 
 - xii, 500 p. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0134931491 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Communication.<br/>English language--Rhetoric.