Purcell, W. D., & Koontz, S. R. (1999). Agricultural futures and options: Principles and strategies (2nd ed.). Upper Saddle River, N.J.: Prentice Hall.
Trích dẫn kiểu ChicagoPurcell, Wayne D., và Stephen R. Koontz. Agricultural Futures and Options: Principles and Strategies. 2nd ed. Upper Saddle River, N.J.: Prentice Hall, 1999.
Deismireacht MLAPurcell, Wayne D., và Stephen R. Koontz. Agricultural Futures and Options: Principles and Strategies. 2nd ed. Upper Saddle River, N.J.: Prentice Hall, 1999.
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