Gamma,Erich  <br/><br/>
Design Patterns: Elements of Reusable Object-Oriented Software 

 - Noida:  Pearson,  2025. 
 - xiii, 380 p. : ill. 
<br/><br/><label>ISBN: </label>9789332555402 
<br/><br/><label>Dewey Class. No.: </label>005.12 GAM