ELTON, E. J., & GRUBER, M. J. (1991). Modern portopolio theory and investment analysis.--ed.4. John Wiley and Sons.
Lua i Stíl Chicago (17ú heag.)ELTON, Edwin J., agus Martin J. GRUBER. Modern Portopolio Theory and Investment Analysis.--ed.4. New York: John Wiley and Sons, 1991.
Lua MLA (9ú heag.)ELTON, Edwin J., agus Martin J. GRUBER. Modern Portopolio Theory and Investment Analysis.--ed.4. John Wiley and Sons, 1991.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.