Van der Ploeg, R. (2009). Aggressive oil extraction and precautionary saving: Coping with volatility. University of Oxford.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रVan der Ploeg, R. Aggressive Oil Extraction and Precautionary Saving: Coping with Volatility. University of Oxford, 2009.
एमएलए (9वां संस्करण) प्रशस्ति पत्रVan der Ploeg, R. Aggressive Oil Extraction and Precautionary Saving: Coping with Volatility. University of Oxford, 2009.
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