Census of India, 1991 <br/><br/>
Language. Sikkim. V. 22, Pt. IVB(I)(a)-C series, Table   C-7    

 - Sikkim  Govt. Press           1991 
 - iii, 38p  cm. 
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Dewey Class. No.: </label>Y:5.2973sN91, P1.22