Johnston, Mark W. <br/><br/>
Sales force management. 

 - 8th ed. 
 - Delhi :  Tata McGraw-Hill Publishing Company Ltd,  1981. 
 - xvii, 491 p. :  ill. ;  26 cm. 
<br/><br/><label>ISBN: </label>0070606331 
<br/><br/><label>Dewey Class. No.: </label>685.81 JOH