Cita APA (7a ed.)

Michels, R. (1962). Political parties: A sociological study of the oligarchical tendencies of modern democracy. Collier Books.

Cita Chicago Style (17a ed.)

Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. New York: Collier Books, 1962.

Cita MLA (8a ed.)

Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Collier Books, 1962.