GUP, B. E. (1992). The Basics Of Investing. John Wiley & Sons.
Lua i Stíl Chicago (17ú heag.)GUP, Benton E. The Basics Of Investing. John Wiley & Sons, 1992.
Lua MLA (8ú heag.)GUP, Benton E. The Basics Of Investing. John Wiley & Sons, 1992.
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