Comfort, R. A. (1966). Revolutionary Hamburg: Labor politics in the early Weimar Republic. Stanford University Press.
Čikaški stil citiranja (17. izdanje)Comfort, Richard A. Revolutionary Hamburg: Labor Politics in the Early Weimar Republic. Standford, Calif: Stanford University Press, 1966.
MLA način citiranja (9. izdanje)Comfort, Richard A. Revolutionary Hamburg: Labor Politics in the Early Weimar Republic. Stanford University Press, 1966.
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