Murphy H A <br/><br/>
Effective business communications 
Murphy H A; Hildebrandt H W 
 - 6 
 - NY  NY, Macmillan  1991 
 - 864p 
<br/><br/><label>ISBN: </label>0-07-112703-8 
<br/><br/><label>Source: </label>Textbook