Songoti bidhane nirdesona o poramorshodan 
Dr.Subir Nag and Dr.Gargi Dutta 
 - 4th 
 - Kolkata  Rita Book  c 2010 
 - 400p. 
<br/><br/><label>ISBN: </label> Rs.150 
<br/><br/><label>Dewey Class. No.: </label>371.4  / Su941