APA (7th ed.) Citation

Oman, C. W. C. (1914). The dark ages, 476 - 918 (6. ed.). Rivingtons.

Chicago Style (17th ed.) Citation

Oman, Charles William Chadwick. The Dark Ages, 476 - 918. 6. ed. London: Rivingtons, 1914.

MLA (9th ed.) Citation

Oman, Charles William Chadwick. The Dark Ages, 476 - 918. 6. ed. Rivingtons, 1914.