Editor don cassel  <br/><br/>
Source 1-computing essentials  

 - Prentice hall  
<br/><br/><label>ISBN: </label>9813026286 
<br/><br/><label>Subjects--Topical Terms: </label><br/> Electronic data processing 
<br/><br/><label>Dewey Class. No.: </label>004 COM