APA (7th ed.) Citation

Michels, R., Paul, E., & Paul, C. (1915). Political parties: A sociological study of the oligarchical tendencies of modern democracy. Hearst's International [sic] Library Co..

Chicago Style (17th ed.) Citation

Michels, Robert, Eden Paul, and Cedar Paul. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. New York: Hearst's International [sic] Library Co., 1915.

MLA (9th ed.) Citation

Michels, Robert, et al. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. Hearst's International [sic] Library Co., 1915.