R.Gupta, <br/><br/>
GATE Electronics 7 Communication Engineering Previous Years` Papers& Practice Test Paprs(Solved)/ 

 - New Delhi:  Ramesh,  2015. 
<br/><br/><label>ISBN: </label>978817826791 
<br/><br/><label>Dewey Class. No.: </label>621  / GUP/G