Dulek R E <br/><br/>
Principles of Business communication 
Dulek R E; Fielden J S 
 - United Kingdom  United Kingdom, London, Macmillan Pub. co.  1990 
 - 710p 
<br/><br/><label>ISBN: </label>0-02-946108-1 
<br/><br/><label>Source: </label>Textbook