Wille, Edgar. <br/><br/>
Quality :  achieving excellence / 
Edgar Wille. 
 - New Ed ed. 
 - [S.l.] :  Century,  1993. 
 - 256 p. ;  23 cm. 
<br/><br/> Import. 
<br/><br/><label>ISBN: </label>0712656723 (paperback) 9780712656726 (paperback)