Williams, Al. <br/><br/>
DOS and Windows protected mode :  programming with DOS extenders in C / 
Al Williams. 
 - Reading, Mass. :  Addison-Wesley,  c1993. 
 - xviii, 503 p. ;  24 cm.  
 - The Andrew Schulman programming series. .
<br/><br/> Includes index. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0201632187 (pbk.) 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>MS-DOS (Computer file).<br/>PC-DOS (Computer file).<br/>Microsoft Windows (Computer file).
<br/><br/><label>Subjects--Topical Terms: </label><br/>Operating systems (Computers).<br/>C (Computer program language).