APA stil citiranja

Barker, J. W. (1966). Justinian and the Later Roman Empire: Justinian and the Later Roman Empire. Madison: The University of Wisconsin Press.

Chicago stil citiranja

Barker, John Walton. Justinian and the Later Roman Empire: Justinian and the Later Roman Empire. Madison: The University of Wisconsin Press, 1966.

MLA stil citiranja

Barker, John Walton. Justinian and the Later Roman Empire: Justinian and the Later Roman Empire. Madison: The University of Wisconsin Press, 1966.