APA (7th ed.) Zitazioa
Pittenger, M. (2012). Class unknown: Undercover investigations of American work and poverty from the progressive era to the present. New York University Press.
Chicago Style (17th ed.) Zitazioa
Pittenger, Mark. Class Unknown: Undercover Investigations of American Work and Poverty from the Progressive Era to the Present. New York: New York University Press, 2012.
MLA (9th ed.) Zitazioa
Pittenger, Mark. Class Unknown: Undercover Investigations of American Work and Poverty from the Progressive Era to the Present. New York University Press, 2012.
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