Commerce in the dark ages : a critique of the evidence.

MLA

Grierson, Philip. Commerce In the Dark Ages : a Critique of the Evidence. London: s.n., 1958.

APA

Grierson, P. (1958). Commerce in the dark ages : a critique of the evidence. London: s.n.

Chicago

Grierson, Philip, Commerce In the Dark Ages : a Critique of the Evidence. London: s.n., 1958.