Spurga, R. C. (2006). Commodity fundamentals: How to trade the precious metals, energy, grain, and tropical commodity markets. Hoboken, N.J: John Wiley & Sons.
Παραπομπή Chicago StyleSpurga, Ronald C. Commodity Fundamentals: How to Trade the Precious Metals, Energy, Grain, and Tropical Commodity Markets. Hoboken, N.J: John Wiley & Sons, 2006.
Παραπομπή MLASpurga, Ronald C. Commodity Fundamentals: How to Trade the Precious Metals, Energy, Grain, and Tropical Commodity Markets. Hoboken, N.J: John Wiley & Sons, 2006.
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