Usselman, S. W. (2002). Regulating railroad innovation: Business, technology, and politics in America, 1840-1920. Cambridge University Press.
芝加哥风格引文Usselman, Steven W. Regulating Railroad Innovation: Business, Technology, and Politics in America, 1840-1920. Cambridge, U.K. ; New York: Cambridge University Press, 2002.
MLA引文Usselman, Steven W. Regulating Railroad Innovation: Business, Technology, and Politics in America, 1840-1920. Cambridge University Press, 2002.
警告：这些引文格式不一定是100％准确.