APA (7th ed.) Citation

Lewis, A. R. (1958). The northern seas: Shipping and commerce in northern Europe, A.D. 300-1100. Princeton University Press.

Chicago Style (17th ed.) Citation

Lewis, Archibald R. The Northern Seas: Shipping and Commerce in Northern Europe, A.D. 300-1100. Princeton: Princeton University Press, 1958.

MLA (9th ed.) Citation

Lewis, Archibald R. The Northern Seas: Shipping and Commerce in Northern Europe, A.D. 300-1100. Princeton University Press, 1958.