Richards  R.  P. <br/><br/>
AVCE   Information  and  Communication  Technology  Units    1--3. 

 - London; Payne-  Gallway. 2008. 
<br/><br/><label>ISBN: </label>978-1-903112-29-8 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Data Processing
<br/><br/><label>Dewey Class. No.: </label>004 RIC.