Dyfyniad APA

Elton, E. J., & Gruber, M. J. (2002). Modern portfolio theory and investment analysis (5th ed.). John Wiley & Sons.

Dyfyniad Arddull Chicago

Elton, Edwin J., and Martin Jay Gruber. Modern Portfolio Theory and Investment Analysis. 5th ed. New York: John Wiley & Sons, 2002.

Dyfyniad MLA

Elton, Edwin J., and Martin Jay Gruber. Modern Portfolio Theory and Investment Analysis. 5th ed. John Wiley & Sons, 2002.

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