Ashworth, J. (2012). The republic in crisis, 1848-1861. Cambridge University Press.
芝加哥风格引文Ashworth, John. The Republic in Crisis, 1848-1861. Cambridge ; New York: Cambridge University Press, 2012.
MLA引文Ashworth, John. The Republic in Crisis, 1848-1861. Cambridge University Press, 2012.
警告：这些引文格式不一定是100％准确.