Wilcox, Dennis L. <br/><br/>
Public relations :  strategies and tactics / 
Dennis L. Wilcox, Phillip H. Ault, Warren K. Agee. 
 - 3rd ed. 
 - New York :  HarperCollins Publishers,  1992. 
 - 708 p. :  ill. ;  24 cm. 
<br/><br/>p. 669-690 
<br/><br/><label>ISBN: </label>0065001001  RM175.65 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Public relations.<br/>Public relations--United States.