Gamma Erich et al. <br/><br/>
Design patterns  elements of reusable object-oriented software 

 - Massachusetts  Addison-Wesley 
 - xv, 395p.   
<br/><br/><label>ISBN: </label>9812358757 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Object--Oriented software design (Reusable)--Computer