MLA

Hodges, Richard. Dark Age Economics : the Origins of Towns and Trade A.d. 500-1000. 2nd ed. London: Duckworth, 1989.

APA

Hodges, R. (1989). Dark age economics : the origins of towns and trade A.D. 500-1000. 2nd ed. London: Duckworth.

Chicago

Hodges, Richard, Dark Age Economics: The Origins of Towns and Trade A.D. 500-1000. 2nd ed. London: Duckworth, 1989.