Cita APA (7th ed.)

Michels, R. (1962). Political parties: A sociological study of the oligarchical tendencies of modern democracy. The Free Press.

Cita Chicago (17th ed.)

Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Nueva York: The Free Press, 1962.

Cita MLA (9th ed.)

Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. The Free Press, 1962.