Heywood, A. (2000). Key Concepts in Politics. Basingstoke: Palgrave Macmillan. Hirsch, P. M. (1972). Processing fads and fashions: An organization-set analysis of cultural industry systems. American Journal of Sociology(77), 639-659.
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Heywood, Andrew (2000), Key Concepts in Politics, London: Macmillan Press Ltd.
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