NCERT <br/><br/>
Indian constitution at work textbook in political science for class XI  : 

 - New Delhi  : NCERT,  2018 
 - 242p. 
<br/><br/><label>ISBN: </label>81-7450-550-4 
<br/><br/><label>Dewey Class. No.: </label>342.5402 N213I