Style de citation APA (7e éd.)

Kreutz, B. M. (1991). Before the Normans: Southern Italy in the Ninth and Tenth Centuries. University of Pennsylvania Press.

Style de citation Chicago (17e éd.)

Kreutz, Barbara M. Before the Normans: Southern Italy in the Ninth and Tenth Centuries. Philadelphia: University of Pennsylvania Press, 1991.

Style de citation MLA (8e éd.)

Kreutz, Barbara M. Before the Normans: Southern Italy in the Ninth and Tenth Centuries. University of Pennsylvania Press, 1991.