APA-ийн эшлэл(7 дахь хэвлэлт)

Michels , . R. (1968). Political parties: A sociological study of the Oligarchical tendencies of modern democracy (2nd ed.). Free Press.

Чикаго-гийн эшлэл (17 дахь хэвлэлт)

Michels , Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. 2nd ed. New York: Free Press, 1968.

MLA -ийн эшлэл (9 дэх хэвлэлт)

Michels , Robert. Political Parties: A Sociological Study of the Oligarchical Tendencies of Modern Democracy. 2nd ed. Free Press, 1968.