Lea, Derek <br/><br/>
Creative Photoshop CS4 :  digital illustration and art techniques / 
Derek Lea 
 - Burlington, MA :  Focal Press/Elsevier,  2009 
 - xii, 422 p. :  col. ill. ;  25 cm. 
<br/><br/>Includes index 
<br/><br/><label>ISBN: </label>9780240521343  RM121.29 024052134X 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Adobe Photoshop
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer graphics<br/>Image processing--Digital techniques