CUTHBERSTON KEITH. (2001). INVESTMENTS SPOT AND DERIVATIVES MARKETS. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)CUTHBERSTON KEITH. INVESTMENTS SPOT AND DERIVATIVES MARKETS. CHICHESTER: JOHN WILEY AND SONS, 2001.
Lua MLA (9ú heag.)CUTHBERSTON KEITH. INVESTMENTS SPOT AND DERIVATIVES MARKETS. JOHN WILEY AND SONS, 2001.
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