Jagerson, J., & Hansen, S. W. (2011). All about investing in gold: The easy way to get started. McGraw-Hill.
Lua i Stíl Chicago (17ú heag.)Jagerson, John, agus S. Wade Hansen. All About Investing in Gold: The Easy Way to Get Started. New York: McGraw-Hill, 2011.
Lua MLA (9ú heag.)Jagerson, John, agus S. Wade Hansen. All About Investing in Gold: The Easy Way to Get Started. McGraw-Hill, 2011.
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