Marshall, Perry S. <br/><br/>
80/20 sales and marketing :  the definitive guide to working less and making more / 
by Perry Marshall. 
 - Irvine, Calif. :  Entrepreneur Media, Inc.,  [2013] 
 - xxvi, 230 p. :   ill. ;  23 cm 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>1599185059 (alk. paper) 9781599185057 (alk. paper) 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marketing--Management<br/>Sales management