Erich Gamma & Richard Helm <br/><br/>
Design Patterns  Elements of Reusable Object-Oriented Software 

 - Canada  Addision Wesley Publishing Company  1995 
 - 395p 
<br/><br/><label>ISBN: </label>9780201633610 
<br/><br/><label>Dewey Class. No.: </label>005.12 ERI