Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.

APA Citation Edition Citation

Markus, R. A. (1997). Gregory the Great and his world. Cambridge University Press.

Chicago Citation Edition Citation

Markus, R. A. Gregory the Great and His World. Cambridge: Cambridge University Press, 1997.

MLA Citation Edition Citation

Markus, R. A. Gregory the Great and His World. Cambridge University Press, 1997.