Babu, T. R. Ganesh and Subin, P. Glaret <br/><br/>
Communication theory 

 - 4th ed. 
 - Chennai  ; Scitech Publications  , 2014 
 - Various pages 
<br/><br/><label>ISBN: </label>9788183715058  425 
<br/><br/><label>Subjects--Topical Terms: </label><br/>English<br/>English Grammar<br/>English Language
<br/><br/><label>Dewey Class. No.: </label>425  / BAB