Cita APA (7a ed.)
Middleton, N. (2005). Early medieval port customs, tolls and controls on foreign trade. Early Medieval Europe, 13(4), 313-359.
Cita Chicago Style (17a ed.)
Middleton, Neil. "Early Medieval Port Customs, Tolls and Controls on Foreign Trade." Early Medieval Europe 13, no. 4 (2005): 313-359.
Cita MLA (9a ed.)
Middleton, Neil. "Early Medieval Port Customs, Tolls and Controls on Foreign Trade." Early Medieval Europe, vol. 13, no. 4, 2005, pp. 313-359.
Precaución: Estas citas no son 100% exactas.