Werner, D. Michael. <br/><br/>
Using DOS / 
by D. Werner Michael, Thomas W. Warner, and Joan S. Perciballi. 
 - San Francisco, Calif :  HarperCollins,  1990. 
 - viii, 357 p. 
<br/><br/><label>ISBN: </label>0673462579 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers).<br/>MS-DOS (Computer operating system).