Professional selling/ 

 - Intramuros, Manila :   Unlimited books library services & publishing inc.    c2018. 
 - 	x , 269 pages :   illustrations ;   25cm. 
<br/><br/><label>ISBN: </label>978-621-427-019-4 
<br/><br/><label>Dewey Class. No.: </label>Fil. 	658.85 S487p 2018