Michels, R. (1959). Political parties: A sociological study of the oligarchical tendencies of modern democracy. Dover Publications.
Citace podle Chicago (17th ed.)Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Nueva York: Dover Publications, 1959.
Citace podle MLA (9th ed.)Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Dover Publications, 1959.
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