APA (7th ed.) Citation

Markus, R. A. (1990). The end of ancient Christianity. Cambridge University Press.

Chicago Style (17th ed.) Citation

Markus, R. A. The End of Ancient Christianity. Cambridge [England] ; New York: Cambridge University Press, 1990.

MLA (9th ed.) Citation

Markus, R. A. The End of Ancient Christianity. Cambridge University Press, 1990.