Excellence in Business communication / 
Thill, John V ; Courtland L. Bovee ;Ava Cross 
 - Toronto:  Prentice Hall,  2002. 
 - xxiii,645 p,: 
<br/><br/><label>ISBN: </label>0130193550 
<br/><br/><label>LC Class. No.: </label>HF5718.2  / T494  2002