Bardalai, Bardalai, <br/><br/>
Modern english grammar & composition 
by Nabakanta Bardalai 
 - 20th ed. 
 - Guwahati:  Assam publishing company,  2003. 
<br/><br/><label>ISBN: </label>8186384014 
<br/><br/><label>Subjects--Index Terms: </label>English grammar 
<br/><br/><label>Dewey Class. No.: </label>425