APA-viite (7. p.)
Roberts, K. (2011). The origins of business, money, and markets. Columbia Business School Pub..
Chicago-viite (17. p.)
Roberts, Keith. The Origins of Business, Money, and Markets. New York: Columbia Business School Pub., 2011.
MLA-viite (9. p.)
Roberts, Keith. The Origins of Business, Money, and Markets. Columbia Business School Pub., 2011.
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