Michels, R. (1962). Political parties: A sociological study of the oligarchical tendencies of modern democracy. The Free Press.
Citace podle Chicago (17th ed.)Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Nueva York: The Free Press, 1962.
Citace podle MLA (9th ed.)Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. The Free Press, 1962.
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