Sri Lankawe pusthakala valine Neethivedeenge neethi thorathuru Avashyatha itu kirima pilibadha adhdhiyanayaki:neethi pusthakala,jathika pusthakala ha pralekana seva mandalaya ,jathika lekanarakshaka departhamanthuva Ashrithaya.Theses MASSc,University of kelaniya,2006.