APA (7th ed.) Citation

Elton, E. J., & Gruber, M. J. (1981). Modern portfolio theory and investment analysis (5th edition.). John Wiley & Sons, Inc.

Chicago Style (17th ed.) Citation

Elton, Edwin J., and Martin J. Gruber. Modern Portfolio Theory and Investment Analysis. 5th edition. New York: John Wiley & Sons, Inc, 1981.

MLA (9th ed.) Citation

Elton, Edwin J., and Martin J. Gruber. Modern Portfolio Theory and Investment Analysis. 5th edition. John Wiley & Sons, Inc, 1981.