O'Callaghan, G. (1993). The structure and operation of the world gold market. International Monetary Fund.
Citazione stile Chigago Style (17a edizione)O'Callaghan, Gary. The Structure and Operation of the World Gold Market. Washington, D.C: International Monetary Fund, 1993.
Citatione MLA (9a ed.)O'Callaghan, Gary. The Structure and Operation of the World Gold Market. International Monetary Fund, 1993.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.