Harwood, H. H. (2010). The railroad that never was: Vanderbilt, Morgan, and the South Pennsylvania Railroad. Indiana University Press.
芝加哥风格引文Harwood, Herbert H. The Railroad That Never Was: Vanderbilt, Morgan, and the South Pennsylvania Railroad. Bloomington: Indiana University Press, 2010.
MLA引文Harwood, Herbert H. The Railroad That Never Was: Vanderbilt, Morgan, and the South Pennsylvania Railroad. Indiana University Press, 2010.
警告：这些引文格式不一定是100％准确.