APA (7th ed.) Citation

Oman, C. W. C. (1897). The Byzantine Empire (2.ed.). Unwin.

Chicago Style (17th ed.) Citation

Oman, Charles William Chadwick. The Byzantine Empire. 2.ed. London: Unwin, 1897.

MLA (9th ed.) Citation

Oman, Charles William Chadwick. The Byzantine Empire. 2.ed. Unwin, 1897.