APA (7th ed.) Citation

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

Chicago Style (17th ed.) Citation

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

MLA (9th ed.) Citation

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