B.L Theraja <br/><br/>
A textbook of Electrical Technology in S.I Units  volume II  :  AC and DC machines 
By B.L Theraja 
 - 1st  
 - New Delhi  S.Chand & Company PVT .LTD  2005 
<br/><br/><label>ISBN: </label>81 219 2437-5