Retnamma, K. <br/><br/>
Malayala bhasha charitram ezhuthachan vare / 
by K. Retnamma 
 - Thiruvananthapuram :  State Institute of Languages,  2003. 
<br/><br/><br/>In Malayalam 
<br/><br/><label>ISBN: </label>8176383716 
<br/><br/><label>Subjects--Index Terms: </label>History Of Malayalam Language Linguistics - Malayalam - History