Gaya APA

Elton, E, J., Gruber, M, J. (1984). Modern Portfolio Theory and Investment Analysis (Second - Ed.). Canada: John Wiley and Sons, Inc..

Gaya MLA

Elton, Edwin, J., Gruber, Martin, J. "Modern Portfolio Theory and Investment Analysis". Second - Ed. Canada: John Wiley and Sons, Inc., 1984. Text.