GEMAN HELYETTE. (2005). COMMODITIES AND COMMODITY DERIVATIVES. JOHN WILEY & SONS.
芝加哥风格引文GEMAN HELYETTE. COMMODITIES AND COMMODITY DERIVATIVES. CHICHESTER: JOHN WILEY & SONS, 2005.
MLA引文GEMAN HELYETTE. COMMODITIES AND COMMODITY DERIVATIVES. JOHN WILEY & SONS, 2005.
警告：这些引文格式不一定是100％准确.