බිල්ලා :  Sinhala 

 - Colombo :  Social Scientist's Association ,  1997 
 - 39 p.:  21cm 
<br/><br/><label>ISBN: </label>9559102103 
<br/><br/><label>Dewey Class. No.: </label>711.3 : 061  /  සමාජ