Cita APA (7th ed.)

ELTON, E. J., & GRUBER, M. J. (1991). Modern portopolio theory and investment analysis.--ed.4. John Wiley and Sons.

Cita Chicago (17th ed.)

ELTON, Edwin J., i Martin J. GRUBER. Modern Portopolio Theory and Investment Analysis.--ed.4. New York: John Wiley and Sons, 1991.

Cita MLA (9th ed.)

ELTON, Edwin J., i Martin J. GRUBER. Modern Portopolio Theory and Investment Analysis.--ed.4. John Wiley and Sons, 1991.