Census of India, 1981 <br/><br/>
Regional divisions of India   A cartographic analysis. Nagaland. V. 15    

 - Nagaland  Govt Press           1981 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.277sN81, M1.15