Citazione Stile APA (7a Edizione)
Keen, M. (2000). VIVAT, CVAT and all that: New forms of value-added tax for federal systems. International Monetary Fund.
Citazione stile Chigago Style (17a edizione)
Keen, Michael. VIVAT, CVAT and All That: New Forms of Value-added Tax for Federal Systems. Washington: International Monetary Fund, 2000.
Citatione MLA (9a ed.)
Keen, Michael. VIVAT, CVAT and All That: New Forms of Value-added Tax for Federal Systems. International Monetary Fund, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.