Attanayake , B <br/><br/>
Karyala kalamanakaranaya :  sannivedanaya ha mahajana sambandatha 

 - Varakapola  Arya Publishers  1994 
 - 52 p ., 
<br/><br/> Office management & Communication Methods 
<br/><br/><label>ISBN: </label>9555530866 
<br/><br/><label>Dewey Class. No.: </label>302.2  / ATT