Wells W <br/><br/>
Advertising: principles & practice 
Wells W; Burnett J And Others 
 - 4 
 - New Jersey  New Jersey, Prentice-Hall  1998 
 - 731p 
<br/><br/><label>ISBN: </label>0-13-597881-5 
<br/><br/><label>Source: </label>Textbook