Sorgenfrei, C. (2011). Optimum currency areas: A monetary union for southern Africa. Diplomica Verlag.
芝加哥风格引文Sorgenfrei, Christian. Optimum Currency Areas: A Monetary Union for Southern Africa. Hamburg: Diplomica Verlag, 2011.
MLA引文Sorgenfrei, Christian. Optimum Currency Areas: A Monetary Union for Southern Africa. Diplomica Verlag, 2011.
警告：这些引文格式不一定是100％准确.