Van der Ploeg, R., & Poelhekke, S. (2008). Volatility and the natural resource curse. University of Oxford.
芝加哥风格引文Van der Ploeg, R., 与 S. Poelhekke. Volatility and the Natural Resource Curse. University of Oxford, 2008.
MLA引文Van der Ploeg, R., 与 S. Poelhekke. Volatility and the Natural Resource Curse. University of Oxford, 2008.
警告：这些引文格式不一定是100％准确.