Fitch, J. A. (1989). The steel workers. London: Univeisty of Pittsburgh Press.
Trích dẫn kiểu ChicagoFitch, John A. The Steel Workers. London: Univeisty of Pittsburgh Press, 1989.
Deismireacht MLAFitch, John A. The Steel Workers. London: Univeisty of Pittsburgh Press, 1989.
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