Sales management  analysis and decision marketing 
Thomas N. Ingram . [et al]. 
 - 4th ed. 
 - Fortworth  Harcourt College  2001 
 - xxi, 452p., 28cm. 
<br/><br/><label>ISBN: </label>0-03-026699-8. 
<br/><br/><label>Dewey Class. No.: </label>658.81  / S12S