APA (7th ed.) Citation

Stephenson, P. c. 2. J. (2010). Constantine: Roman emperor, Christian victor (1. publ. in hardcover in the United States.). Overlook Press.

Chicago Style (17th ed.) Citation

Stephenson, Paul ca. 20./21. Jh. Constantine: Roman Emperor, Christian Victor. 1. publ. in hardcover in the United States. New York: Overlook Press, 2010.

MLA (9th ed.) Citation

Stephenson, Paul ca. 20./21. Jh. Constantine: Roman Emperor, Christian Victor. 1. publ. in hardcover in the United States. Overlook Press, 2010.