APA (7th ed.) Citation

Comnena, A., & Sewter, E. R. A. (2003). The Alexiad. Penguin Books.

Chicago Style (17th ed.) Citation

Comnena, Anna, and E. R. A. Sewter. The Alexiad. London ; New York: Penguin Books, 2003.

MLA (9th ed.) Citation

Comnena, Anna, and E. R. A. Sewter. The Alexiad. Penguin Books, 2003.