Dyfyniad APA
York, R., & Zhan, Z. (2009). Fiscal vulnerability and sustainability in oil-producing Sub-Saharan African countries. International Monetary Fund.
Dyfyniad Arddull Chicago
York, Robert, and Zaijin Zhan. Fiscal Vulnerability and Sustainability in Oil-producing Sub-Saharan African Countries. [Washington, D.C.]: International Monetary Fund, 2009.
Dyfyniad MLA
York, Robert, and Zaijin Zhan. Fiscal Vulnerability and Sustainability in Oil-producing Sub-Saharan African Countries. International Monetary Fund, 2009.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.