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.
MLA引文Fitch, John A. The Steel Workers. London: Univeisty of Pittsburgh Press, 1989.
警告：这些引文格式不一定是100％准确.