Guilfoyle, Erik. <br/><br/>
Half-Life 2 mods for dummies / 
by Erik Guilfoyle. 
 - Hoboken, N.J. :  Chichester :  Wiley ;  John Wiley [distributor],  2007  1428. 
 - xviii, 334 p. :  ill. ;  24 cm.+  1 CD-ROM (4 3/4 in.) 
<br/><br/> Includes index.  CD-ROM in back pocket. 
<br/><br/><label>ISBN: </label>9780470096314 0470096314 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Half-life 2<br/>Computer games.
<br/><br/><label>Dewey Class. No.: </label>794.81  / G E H