Professional selling / 
Ingram, Thomas N. [et al...]. 
 - 5th ed. 
 - 296, p. :  ; illus. ; (np) ; endnotes, index. ;  25 cm. 
<br/><br/><label>ISBN: </label>9789814416535 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Selling--c2012--Singapore--Newsprint.