Barber, M. (2003). the two cities: Medieval europe 1050-1320 (Second edition.). Routledge.
Citazione stile Chigago Style (17a edizione)Barber, Malcolm. The Two Cities: Medieval Europe 1050-1320. Second edition. London: Routledge, 2003.
Citatione MLA (9a ed.)Barber, Malcolm. The Two Cities: Medieval Europe 1050-1320. Second edition. Routledge, 2003.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.