Michels, R. (1959). Political parties: A sociological study of the oligarchical tendencies of modern democracy. Dover Publications.
Citazione stile Chigago Style (17a edizione)Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Nueva York: Dover Publications, 1959.
Citatione MLA (9a ed.)Michels, Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Dover Publications, 1959.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.