APA (7th ed.) Zitazioa
Gardner, D. (2009). The Motley Fool million dollar portfolio: How to build and grow a panic-proof investment portfolio. Harper Business.
Chicago Style (17th ed.) Zitazioa
Gardner, David. The Motley Fool Million Dollar Portfolio: How to Build and Grow a Panic-proof Investment Portfolio. New York, NY: Harper Business, 2009.
MLA (9th ed.) Zitazioa
Gardner, David. The Motley Fool Million Dollar Portfolio: How to Build and Grow a Panic-proof Investment Portfolio. Harper Business, 2009.
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