Kotler, Philip. <br/><br/>
Principles of marketing / 
Philip Kotler and Gary Armstrong. 
 - 5th edition. 
 - Englewood Cliffs, New Jersey :  Prentice-Hall,  1991. 
 - xxiii, 711 pages :  illustrations (some col.)  28 cm. 
<br/><br/> includes index. 
<br/><br/><label>ISBN: </label>9780136912477 
<br/><br/><label>Subjects--Personal Names: </label><br/>Marketing.