Medina, Roberto <br/><br/>
Principles of marketing / 
Roberto Medina. 
 - rev. ed. 
 - Manila :  Rex Book Store,  c2008. 
 - xv, 326 p. : ill. ; 22 cm. 
<br/><br/>References : p. 300-301. 
<br/><br/><label>ISBN: </label>9789712352423 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing
<br/><br/><label>LC Class. No.: </label>HF5415  / M46 2008