APA (7e ed.) Bronvermelding

Barber, M. (2004). Two cities: Medieval Europe, 1050-1320 (2nd ed.). Routledge.

Chicago (17e ed.) Bronvermelding

Barber, Malcolm. Two Cities: Medieval Europe, 1050-1320. 2nd ed. London ; New York: Routledge, 2004.

MLA (8e ed.) Bronvermelding

Barber, Malcolm. Two Cities: Medieval Europe, 1050-1320. 2nd ed. Routledge, 2004.