PDCA / 
Perbadanan Produktiviti Negara 
 - Petaling Jaya :  Perbadanan Produktiviti Negara,  [n.d] 
 - 1 v. (various pagings) :  ill. ;  21 cm. 
<br/><br/> Title on cover  Pamphlet - english version 
<br/><br/><label>ISBN: </label> RM1.00