Cita APA (7a ed.)

Graham-Campbell, J., & Williams, G. (2007). Silver economy in the Viking age. Left Coast Press.

Cita Chicago Style (17a ed.)

Graham-Campbell, James, y Gareth Williams. Silver Economy in the Viking Age. Walnut Creek, Calif.: Left Coast Press, 2007.

Cita MLA (9a ed.)

Graham-Campbell, James, y Gareth Williams. Silver Economy in the Viking Age. Left Coast Press, 2007.