Cita APA (7a ed.)

Michels , R. (1958). Political parties: A sociological study of the oligarchical tendencies of modern democracy. The free press.

Cita Chicago Style (17a ed.)

Michels , Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Glencoe: The free press, 1958.

Cita MLA (8a ed.)

Michels , Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. The free press, 1958.