Terry Winogard,Fernando Flores <br/><br/>
Understanding computers and cognition 

 - 
 -  Addison-Wesley Publishing  1987 
 - 207 
<br/><br/>  
<br/><br/><label>ISBN: </label>0-201-11297-3 
<br/><br/><label>Dewey Class. No.: </label>004.8