Samajik vigyan : Sansadhan evam vikas : Kaksha 8 ke liye bhugol ki pathyapustak. 
NCERT 
 - New Delhi, India  National Council of Educational Research and Training  2008 
 - 75p. 
<br/><br/><label>ISBN: </label>978-7450-823-2 
<br/><br/><label>Source: </label>Reference