Edward, Johnand  ,  Ward, Chris   & Bytheway, Andy <br/><br/>
The Essence of information system 

 - Prentice - Hall, New Delhi  1991 
 - v,179 
<br/><br/><label>ISBN: </label>81-203-0910-3 
<br/><br/><label>Dewey Class. No.: </label>658.40388 Edw