McHugh, J. (1980). Alexander Holley and the makers of steel. Baltimore: The Johns Hopkins University Press.
Trích dẫn kiểu ChicagoMcHugh, Jeanne. Alexander Holley and the Makers of Steel. Baltimore: The Johns Hopkins University Press, 1980.
MLA引文McHugh, Jeanne. Alexander Holley and the Makers of Steel. Baltimore: The Johns Hopkins University Press, 1980.
警告：這些引文格式不一定是100％准確.