APA (7th ed.) Citation

O'Connor, T. H. (1978). The disunited States: The era of Civil War and Reconstruction (2d ed.). Harper & Row.

Chicago Style (17th ed.) Citation

O'Connor, Thomas H. The Disunited States: The Era of Civil War and Reconstruction. 2d ed. New York: Harper & Row, 1978.

MLA (8th ed.) Citation

O'Connor, Thomas H. The Disunited States: The Era of Civil War and Reconstruction. 2d ed. Harper & Row, 1978.