Jones, Edward.  <br/><br/>
Aplique el dBASE III PLUS /. 
Edward Jones. 
 - Madrid :   Osborne/McGraw-Hill,   1991. 
 - xiv, 483 p. 
<br/><br/><label>ISBN: </label>0078812526 
<br/><br/><label>Universal Decimal Class. No.: </label>681.3.06