Langdon, Ken. <br/><br/>
The complex sales / 
Ken Langdon. 
 - Oxford :  Capstone Publishing,  c2003. 
 - vi, 110 p. :  ill. ;  18 cm. 
<br/><br/> Includes  index. 
<br/><br/><label>ISBN: </label>1841124575 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Selling.<br/>Relationship marketing.