APA (7th ed.) Citation

Elton, E. J., & Gruber, M. J. (1981). Modern portfolio theory and investment analysis. John Wiley & Sons.

Chicago Style (17th ed.) Citation

Elton, Edwin J., and Martin Jay Gruber. Modern Portfolio Theory and Investment Analysis. Nueva York: John Wiley & Sons, 1981.

MLA (9th ed.) Citation

Elton, Edwin J., and Martin Jay Gruber. Modern Portfolio Theory and Investment Analysis. John Wiley & Sons, 1981.