WARWICK BEN. (2000). SEARCHING FOR ALPHA. JOHN WILEY AND SONS.
Lua i Stíl Chicago (17ú heag.)WARWICK BEN. SEARCHING FOR ALPHA. NEW YORK: JOHN WILEY AND SONS, 2000.
Lua MLA (9ú heag.)WARWICK BEN. SEARCHING FOR ALPHA. JOHN WILEY AND SONS, 2000.
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