Ratnam, C. N. <br/><br/>
Shikshavedangam  Vedalapanathinte reethisasthram / 

 - Kunnamkulam :  Kanippayyur Sankaran Nampoothirippad smaraka Grandhasala ,  2011. 
 - 256 p. 
<br/><br/><label>ISBN: </label>9789381614020