Van der Ploeg, R. (2009). Aggressive oil extraction and precautionary saving: Coping with volatility. University of Oxford.
Chicago-viite (17. p.)Van der Ploeg, R. Aggressive Oil Extraction and Precautionary Saving: Coping with Volatility. University of Oxford, 2009.
MLA-viite (9. p.)Van der Ploeg, R. Aggressive Oil Extraction and Precautionary Saving: Coping with Volatility. University of Oxford, 2009.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.