APA (7th ed.) Zitazioa
Elton Edwin J & Gruber Martin J. (1996). Modern portfolio theory and investment analysis (5 th ed.). John Wiley & Sons.
Chicago Style (17th ed.) Zitazioa
Elton Edwin J eta Gruber Martin J. Modern Portfolio Theory and Investment Analysis. 5 th ed. New York: John Wiley & Sons, 1996.
MLA (9th ed.) Zitazioa
Elton Edwin J eta Gruber Martin J. Modern Portfolio Theory and Investment Analysis. 5 th ed. John Wiley & Sons, 1996.
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