Perera,N.M <br/><br/>
Rajya bhasha prashnaya :  samasamaj stawaraya 

 - 2nd 
 - Colombo  Young Socialists Manifestos  2006 
 - 78 p ., 
<br/><br/> The Official Language Issue 
<br/><br/><label>ISBN: </label>9559150081 
<br/><br/><label>Dewey Class. No.: </label>305  / PER