Pirenne, H. (1956). Medieval cities: Their origins and the revival of trade. Doubleday Anchor Books.
Cita Chicago Style (17a ed.)Pirenne, Henri. Medieval Cities: Their Origins and the Revival of Trade. New York: Doubleday Anchor Books, 1956.
Cita MLA (8a ed.)Pirenne, Henri. Medieval Cities: Their Origins and the Revival of Trade. Doubleday Anchor Books, 1956.
Precaución: Estas citas no son 100% exactas.