Siebert, F 1963, 'The Libertarian theory of the press', in...
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Siebert, F 1963, 'The Libertarian theory of the press', in ...mmc.twitbookclub.org/MMC910/Readings/Week 03/The... · Siebert, F 1963, 'The Libertarian theory of the press', in Four
Siebert, F 1963, 'The Libertarian theory of the press', in Four Theories of the Press: the Authoritarian, Libertarian, Social Responsibility and Soviet Communist Concepts of What the Press Should Be and Do, University of Illinois Press, Urbana, pp39-71.