(1981). The Dow Jones-Irwin guide to commodities trading / Bruce G. Gould.
Cita Chicago (17th ed.)The Dow Jones-Irwin Guide to Commodities Trading / Bruce G. Gould. 1981.
Cita MLA (9th ed.)The Dow Jones-Irwin Guide to Commodities Trading / Bruce G. Gould. 1981.
Atenció: Aquestes cites poden no estar 100% correctes.