The Northern seas. Shipping and commerce in northern Europe A.D. 300-1100. By Archibald R. Lewis

MLA

Grierson, Philip. The Northern Seas. Shipping and Commerce In Northern Europe A.d. 300-1100. By Archibald R. Lewis. Oxford: Oxford University Press, 1961.

APA

Grierson, P. (1961). The Northern seas. Shipping and commerce in northern Europe A.D. 300-1100. By Archibald R. Lewis. Oxford: Oxford University Press.

Chicago

Grierson, Philip, The Northern Seas. Shipping and Commerce In Northern Europe A.D. 300-1100. By Archibald R. Lewis. Oxford: Oxford University Press, 1961.