APA (7th ed.) Citation

Lewis, A. R. (1958). The Northern Seas: Shipping and commerce in Northern Europe a.D. 300 - 1100. Princeton Univ. Press.

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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

Warning: These citations may not always be 100% accurate.