Barber, M. (2004). Two cities: Medieval Europe, 1050-1320 (2nd ed.). Routledge.
Čikaški stil citiranja (17. izdanje)Barber, Malcolm. Two Cities: Medieval Europe, 1050-1320. 2nd ed. London ; New York: Routledge, 2004.
MLA način citiranja (8. izdanje)Barber, Malcolm. Two Cities: Medieval Europe, 1050-1320. 2nd ed. Routledge, 2004.
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