Siebert, Fred S. <br/><br/>
Four theories of the press  / 
Fred S.Siebert, Theodore Peterson,W ilbur Schramm. 
 - Chicago  :  University of Illionois Press ,  1956 
 - 153 p. ;  20 cm. 
<br/><br/>Includes bibliographical references P.147-153 
<br/><br/><label>ISBN: </label>0252724216 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Press.<br/>Journalism.
<br/><br/><label>Dewey Class. No.: </label>070.17 SIE