Ganit : Kaksha 12 ke liye pathyapustak, Bhag 2 
NCERT (New Delhi India) 
 - New Delhi, India  National Council of Educational Research and Training  2007 
 - viii,303-628p 
<br/><br/><label>ISBN: </label>81-7450-731-0 
<br/><br/><label>Source: </label>Reference