APA-referens (7:e uppl.)
Roberts, K. (2011). The origins of business, money, and markets. Columbia Business School Pub..
Chicago-referens (17:e uppl.)
Roberts, Keith. The Origins of Business, Money, and Markets. New York: Columbia Business School Pub., 2011.
MLA-referens (9:e uppl.)
Roberts, Keith. The Origins of Business, Money, and Markets. Columbia Business School Pub., 2011.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.