Weitz B A <br/><br/>
Selling: building partnerships 
Weitz B A; Castleberry S B And Others 
 - 2 
 - Boston  Boston, Irwin  1995 
 - 591p 
<br/><br/><label>ISBN: </label>0-256-13675-0 
<br/><br/><label>Source: </label>Textbook