Siebert, Fred S. <br/><br/>
Four theories of the press :  the authoritarian, libertarian, social responsibility and Soviet communist concepts of what the press should be and do / 
Fred S. Siebert, Theodore Peterson, Wilbur Schramm. 
 - Urbana :  University of Illinois Press,  1978. 
 - 153 p. ;  21 cm. 
<br/><br/> An Illini book ; 72421-6. 
<br/><br/>Bibliography: p. [147]-153. 
<br/><br/><label>ISBN: </label>0252724216 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Press<br/>Journalism<br/>Communication
<br/><br/><label>LC Class. No.: </label>PN4857