Cita APA (7th ed.)

Elton, E. J. (1991). Modern portfolio theory and investment analysis. John Wiley.

Cita Chicago (17th ed.)

Elton, Edwin J. Modern Portfolio Theory and Investment Analysis. New York: John Wiley, 1991.

Cita MLA (9th ed.)

Elton, Edwin J. Modern Portfolio Theory and Investment Analysis. John Wiley, 1991.