Cita APA (7th ed.)
York, R., & Zhan, Z. (2009). Fiscal vulnerability and sustainability in oil-producing Sub-Saharan African countries. International Monetary Fund.
Cita Chicago (17th ed.)
York, Robert, i Zaijin Zhan. Fiscal Vulnerability and Sustainability in Oil-producing Sub-Saharan African Countries. [Washington, D.C.]: International Monetary Fund, 2009.
Cita MLA (9th ed.)
York, Robert, i Zaijin Zhan. Fiscal Vulnerability and Sustainability in Oil-producing Sub-Saharan African Countries. International Monetary Fund, 2009.
Atenció: Aquestes cites poden no estar 100% correctes.