Tracy, Brian. <br/><br/>
Seni mengunci jualan / Brian Tracy ; translated from the English by Ammran Yunus. 
 Edisi bahasa melayu. 

 - Kuala Lumpur :  PTS Professional Publishing,  2009. 
 - xvi,  205 p. :  23 cm. 
<br/><br/><label>ISBN: </label>9789833586196 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Selling<br/>Selling--Psychological aspects