Cita APA (7a ed.)

Michels, R., & De Grazia, A. (1949). Roberto Michels' First Lectures in Political Sociology. University of Minnesota Press.

Cita Chicago Style (17a ed.)

Michels, Robert, y Alfred De Grazia. Roberto Michels' First Lectures in Political Sociology. Minneapolis: University of Minnesota Press, 1949.

Cita MLA (8a ed.)

Michels, Robert, y Alfred De Grazia. Roberto Michels' First Lectures in Political Sociology. University of Minnesota Press, 1949.