Citazione Stile APA (7a Edizione)

Keen, M. (1997). Vertical Tax Externalities in the Theory of Fiscal Federalism. International Monetary Fund.

Citazione stile Chigago Style (17a edizione)

Keen, Michael. Vertical Tax Externalities in the Theory of Fiscal Federalism. Washington, D.C.: International Monetary Fund, 1997.

Citatione MLA (8a ed.)

Keen, Michael. Vertical Tax Externalities in the Theory of Fiscal Federalism. International Monetary Fund, 1997.