ALEXANDER, G. J. (1986). Portfolio Analysis Gordon J. Alexander, Jack Clark Francis. Prentice-Hall.
Lua i Stíl Chicago (17ú heag.)ALEXANDER, Gordon J. Portfolio Analysis Gordon J. Alexander, Jack Clark Francis. Prentice-Hall, 1986.
Lua MLA (8ú heag.)ALEXANDER, Gordon J. Portfolio Analysis Gordon J. Alexander, Jack Clark Francis. Prentice-Hall, 1986.
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