APA-referens (7:e uppl.)

Ashworth, J. (2012). The republic in crisis, 1848-1861. Cambridge University Press.

Chicago-referens (17:e uppl.)

Ashworth, John. The Republic in Crisis, 1848-1861. Cambridge ; New York: Cambridge University Press, 2012.

MLA-referens (9:e uppl.)

Ashworth, John. The Republic in Crisis, 1848-1861. Cambridge University Press, 2012.