Cita APA (7a ed.)

Elton, E. J., & Gruber, M. J. (1987). Modern portfolio theory and investment analysis (3rd ed.). Wiley & Sons.

Cita Chicago Style (17a ed.)

Elton, Edwin J., y Martin Jay Gruber. Modern Portfolio Theory and Investment Analysis. 3rd ed. New York [etc.]: Wiley & Sons, 1987.

Cita MLA (9a ed.)

Elton, Edwin J., y Martin Jay Gruber. Modern Portfolio Theory and Investment Analysis. 3rd ed. Wiley & Sons, 1987.