Pierce, John C., Beatty, Kathleen M., Hagner, Paul R..
The dynamics of american public opinion : patterns and processes /

. - Glenview  : Scott, Foresman and Co.,  1982 
. - XII, 385 p.  23 cm. 
<br/>К.: Іл., табл. 
<br/><label>  ISBN: </label>0-673-16055-6