Principles of marketing / 
Roberto Medina 
 - rev. ed. 
 - Manila  :  Rex Book Store,  2005. Manila : Rex Book Store 
<br/><br/> Includes Index 
<br/><br/><label>ISBN: </label>9789712352423 
<br/><br/><label>Dewey Class. No.: </label>658.8/S941/2005