Valdes, R., & Engel, E. (2000). Optimal Fiscal Strategy for Oil Exporting Countries. International Monetary Fund.
Citazione stile Chigago Style (17a edizione)Valdes, Rodrigo, e Eduardo Engel. Optimal Fiscal Strategy for Oil Exporting Countries. Washington, D.C.: International Monetary Fund, 2000.
Citatione MLA (8a ed.)Valdes, Rodrigo, e Eduardo Engel. Optimal Fiscal Strategy for Oil Exporting Countries. International Monetary Fund, 2000.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.