Samajik vigyan : Hamare atit - 2 : Kaksha 7 ke liye itihas ki pathyaputak. 
NCERT 
 - New Delhi, India  National Council of Educational Research and Training  2008 
 - 154p. 
<br/><br/><label>ISBN: </label>81-7450-755-8 
<br/><br/><label>Source: </label>Reference