Spurga, R. (2006). Commodity fundamentals: How to trade the precious metals, energy, grain, and tropical commodity markets. John Wiley & Sons.
Trích dẫn kiểu ChicagoSpurga, Ronald. Commodity Fundamentals: How to Trade the Precious Metals, Energy, Grain, and Tropical Commodity Markets. John Wiley & Sons, 2006.
Trích dẫn MLASpurga, Ronald. Commodity Fundamentals: How to Trade the Precious Metals, Energy, Grain, and Tropical Commodity Markets. John Wiley & Sons, 2006.
Cảnh báo: Các trích dẫn này có thể không phải lúc nào cũng chính xác 100%.