Bivins, Thomas H..
Public relations writing: the essentials of style and format /
Thomas H. Bivins 
. - 6th edition 
. - Boston : Dubuque : Madison : Mc-Graw Hill,  2008 
. - xviii, 377 p.  ill., tab.  23 cm. 
<br/><label>  ISBN: </label>978-0-07-351192-4 0-07-351192-7