Cita APA (7a ed.)

Markowitz, H. (1991). Portfolio selection: Efficient diversification of investments (2nd ed.). Basil Blackwell.

Cita Chicago Style (17a ed.)

Markowitz, H. Portfolio Selection: Efficient Diversification of Investments. 2nd ed. Oxford: Basil Blackwell, 1991.

Cita MLA (9a ed.)

Markowitz, H. Portfolio Selection: Efficient Diversification of Investments. 2nd ed. Basil Blackwell, 1991.