IBBOTSON, R. G. (1993). Global Investing: The Professional's Guide To The World Capital Markets/roger G. Ibbotson. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)IBBOTSON, Roger G. Global Investing: The Professional's Guide To The World Capital Markets/roger G. Ibbotson. McGraw-Hill, 1993.
Lua MLA (8ú heag.)IBBOTSON, Roger G. Global Investing: The Professional's Guide To The World Capital Markets/roger G. Ibbotson. McGraw-Hill, 1993.
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