Hersey, Paul. <br/><br/>
Selling :  a behavioral science approach / 
Paul Hersey. 
 - Englewood Cliffs, N.J. :  Prentice-Hall,  c1988. 
 - xii, 210 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0138054908 (pbk.) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Selling.